KEYBOARD:

pros:
enhanced buttons are great (ex: jog dial to control volume, scroll wheel to scroll up and down when browsing webpages (like the scroll wheel on the mouse)); the keys have a soft feel to them so typing is more comfortable than on a conventional keyboard (quieter too); flat design is nice when typing with the keyboard in your lap; no cords! - I find myself typing in bed and in more relaxing positions more.

cons:
uses 2 AA batteries (although I haven't needed to replace them yet and I've been using it for about a month now); software (apparently they haven't worked out all the kinks in their software (I'm running WinXP Pro), so every now and then the enhanced buttons don't work (it's not that big of a deal - all the normal keyboard keys still work when this happens)).

MOUSE:

pros:
nice shape, fits in your hand nicely (if you're right handed) - it's the same shape as the logitech cordless optical mouse; optical sensor works well and allows you to use the mouse easily on many surfaces (including your bed); scroll wheel makes browsing webpages easier: just roll the wheel up or down; a third button (on the left side - for the thumb) can be programmed to do several things (ex: close your current program, go back to the previous webpage, etc.)

cons:
only really comfortable for the right hand; optical sensor won't work on "highly reflective surfaces" (apparently the finish on my desk is too shiny so the mouse doesn't track reliably on it), so you may have to use a mousepad, requires batteries (same deal as with the keyboard); can get lost (if you're disorganized and lose stuff around your desk, you might have to spend time now searching for your mouse as well)

The mouse is a whole different story. I really wanted to like it, but I can't. I am very frustrated by it. One of the things that really turned me on about it was not having to use a mousepad. Well, my desk has wood grain and if I attempt to use the mouse on it, the cursor jumps and skips around. So I have to use a mousepad, or an unsightly piece of paper. Second, for me, the ergonomics are bad. I have a small/medium hand, and I get cramps after using the mouse for more that 30 minutes. Also, the scroll wheel does not work in games. There is absolutely no comparison to my original Dell Logitech optical mouse. The tracking was 10 times better on any surface. I give the mouse */*****.

The software definately needs some polishing. When using any of the volume/media controls, the text on the lower portion of the screen becomes distorted. This can be defeated by turning the on screen key effects off, but then you have no visual indication of the volume level. Also there is no way to program the buttons to do different things in different applications. For instance, there is no way to make the side button go back in Internet Explorer and make it double click everywhere else. I give the software **/*****. I expected better from Logitech.

Because the mouse is so bad, I am looking at spending another $70 on the MX700 which looks much better. There are many other people who were satisfied with the mouse, though, so you should probably try before you buy.

The keyboard is the best out there. Great to type on and all the features you could want. I'm a computer consultant and probably have typed on every keyboard out there and this one is vastly superior. The key action makes typing a breeze and the keyboard is laid out well. Tons of great features like the media control center w/volume control, a scroll wheel, 9 programmable buttons that you can program to do anything you want, etc.

The lack of a caps lock indicator on the keyboard seems to be a problem as 1st, but since you can set the software to display "CAPS LOCK ON" (or off) in big letters on the bottom of the screen for a few seconds when you hit the caps lock, it's not really a problem. And, there is a caps lock indicator on the reciever. They probably didn't put the caps indicator on the keyboard because it would drain the batteries.

The mouse is heavier than a cordless mouse, but oddly enough, if you want to do precision pointing (on a graphics program or somesuch) this helps, since it's not so light and doesn't jeark around as much. However, because of the curved shape of the mouse, our clients that are left-handed simply can't use the mouse comfortably. If you are left-handed you are going to hate the mouse. The mouse is a 4-button mouse. If you need a 5-button mouse, this mouse it not for you.

You simply can't run the keyboard or mouse with low batteries, as you will have all sorts of problems. The best solution is to use rechargable batteries.

It is suggested that you download the current drivers for the keyboard and mouse,... and the current drivers give you significantly more options.

Finally, besides being very impressive for it's ease of use and features, they simply look sharp as heck. Plus, with the rebate, you are getting the best cordless combo at about the same price that you would pay for a basic corded keyboard/mouse.

The mouse takes 2 AA batteries, i use mine ALOT many many hours per day and last approx 3-4 weeks...

The keyboard takes 4 AA batteries not 2...Ive had the keyboard for almost a year now of constant use and havent replaced the batteries yet....

Both work flawlessly from my bed which is at least 10-12 feet away....I hook up my PC to the 36"TV ocaisionally and this cordless KB& Mouse comes in very handy being able to just kick back in bed and surf...

My one and only complaint about this Keyboard and or mouse is actually against Logitech themselves, by forcing you to buy BOTH in combo as opposed to being able to just buy the "Elite Optical Keyboard" separately.....
Wife spilled an entire bowl of icecream dead center on Keyboard, needless to say, thats it for that keyboard, no amount of cleaning is going to save ANY keyboard from a bowl of sticky icecream....
So had to buy another combo, instead of just getting just the Keyboard...

and i like this Keyboard & Mouse combo so much, that now im looking to buy a "spare" just to have set aside for when another "sticky" situation arises..we have 2 PCs side by side, both have this KB & mouse....none better.

1 - Setup was easy. It took more time to get out of the box than to get working.

2 - The reciever transmitter works fine even from within my desk. It's seperated from the mouse and keyboard by a bunch of wood, and no problems.

3 - Works fine with games -- I can't detect any delay between hitting a key or moving the mouse and getting a response.

4 - Nice programable buttons on the mouse and keyboard, and easy to use software to customize those keys. (The mouse is a three button mouse, plus the wheel. The third button is at the thumb.)