Two more for your consideration:
Enermax Aurora (
Aurora Silver) $50
They also have them in black, if you want. I have the Aurora, GREAT keyboard. Comes with 2 USB 1.1 ports (can't use them for flash drives, mainly for something less "power hungry" like mouse or gamepad). Casing is made out of aluminum, and keyboard, itself, rides very low to the table; don't need a wrist pad! Full lay-out keyboard; uses scissor-switch technology (like labtops). EXTREMELY quiet to type on. Someone could be sleeping in the same room, probably wouldn't wake up. The keyboard looks absolutely gorgeous. It might be $50, but you can see where the money went. Con: Doesn't come with ANY multimedia or hotkey buttons at all... 50 bucks for a BASIC keyboard. Still, VERY well made (until the day comes when I break it =P)
or, the Hiper Clavier (
Clavier) $30
Currently out of stock at Newegg, but I'm sure you can find them easily somewhere else. Another aluminum keyboard. Got some pretty good reviews. Supposed to be quiet to type on, only the basic multimedia keys (volume, play, next track, etc.) Doesn't ride as low as the enermax, but still a pretty flat keyboard. Has a labtop layout (letter keys and number pad bunched in together). If you're already used to that, then it shouldn't be a problem. Laser-cut keys, so the letters shouldn't fade. Can't speak much on the performance, because I've never used it, but, again, the reviews are pretty positive. One critic I came across said he didn't like the labtop layout of the keys, because his hands were too big, but that seemed to be the major one. To tell you the truth, I kind of wish I had gotten the Clavier, to save some space on my desk. Oh yeah, unlike the Aurora, these keyboards use the standard rubble domes, like "normal" keyboards.
The DiNovo is supposed to be good, but too expensive in my opinion. Whatever you do, DON'T get a Microsoft comfort curve 2000. They're cheap and look nice, but a lot of people have been complaining about stuck keys and the like. Same with the Kensington Slim.
I was in the same boat as you a few months back... Did a lot of research for labtop style keyboards. A good compromise in price and performance, I found, were the Clavier and the Aurora, AND Enermax Crystal (same as Aurora, but labtop style keys). If you are interested in either of the keyboards, I think the big difference between them is that the Hiper is compact and uses rubber buttons, and the Enermax is full-layout with scissor-switch. The other differences, in my opinion, are a bit trivial.