Microsoft Comfort Curve Keyboard 3000 - Ergonomic for Office & Gaming

All in all, this is a well designed keyboard that helps my hand positions. I want to mention some details to supplement some of the other comments floating around.The GOOD: Ergonomics and OSX CompatibilityThe nice thing about the keyboard is that the curve on the Y and Z axis really seem to improve the positions of my wrists as opposed to the traditional keyboard. I used to have a Microsoft Natural Keyboard but that thing is particularly large. This is a good solution if size is of concern. It sits low on the desk and doesn't have the large wrist supporting frame like the Natural Keyboard. This works for me. I find that the profile of the keyboard and my wrists/arms on desk position are natural.That said, ergonomics have a lot to do with not just the keyboard but the desk and chair you use. I am using an Ikea Galant desk that is height adjustable and a Herman Miller Mirra task chair. I have both adjusted so that my posture is planted pretty optimally, with my elbows 90 degrees to my sitting position, resting on the arm rests and the desk height level with my arm/hands. My arms are comfortably horizontal when approaching the keyboard. Before this, my desk was too high forcing my arms into a "snake ready to strike" / hook-like position which was starting to hurt. It's good to prevent RSI.Mac OS X somewhat compatible: Most keyboards will work sans the extra functionality of special keys. I wasn't expecting the play, volume up and down buttons to work but they do! (The calculator button doesn't do much and the num lock doesn't seem to work, so I guess 3/5)The BAD: Possibly key press feel, number pad or not to number padI just recently purchased this product and my opinion on this is still in the air. The main issue I have with this keyboard is the feel of the key press / tactile feedback. It is quite mushy. I come from both Mac, Dell, and Microsoft keyboards and this one has a very damp, muted key press feel rather than a crisp one. Imagine putting a piece of felt underneath your keys. That's the best way I can describe it. As a consequence, the keys feel heavy. It is quiet though. I'll have to give it a week or so of use to see if I can get used to it.The second problem (that I can't solve) is the number pad or not number pad question. Actually it has less to do with the number pad and more to do with what is between the num pad and regular keys, the arrow keys. Since I use this for programming, I need to use the arrow keys a LOT to navigate my code. A full-sized arrow key set is nice. If you want full-sized arrow keys, usually this means a full sized keyboard. However, the inclusion of a num pad leaves little desk space immediately in front of me for my mouse and mouse pad. Thus my mouse is way off to the right and I have to shift the keyboard and mouse left when I want to use it naturally. With a chopped off keyboard like the Mac bluetooth keyboard, my mouse resides in that position that would otherwise be taken by the num pad. This is more natural and productive. But then I have to deal with a small arrow key pad.You can't win at everything and I suppose you need to make compromises somewhere but these are some of the issues I've run into.The OTHER:Some people complimented that this keyboard is small. It's not that small. As a matter of fact it's a tad bigger than my non-ergonomic Dell keyboard which includes a numeric pad. Being a full featured keyboard with num pad, it is of course larger than keyboards without. If you're a gamer, like mentioned the WASD layout is out of whack. I use this mostly for programming and so for touch type it's pretty comfortable.The bottom line is that as a heavy typer, this keyboard is designed pretty well. Certain issues like the key feel could make or break it for you but it's also something that you can probably get used to. For $13 purchase price, you can't go wrong and it's a cheap price to pay compared to treatment of RSI.