Wireless Keyboard

Does anyone know of any good wireless keyboards, that are good for putting on the lap? Call me spoiled but I would like to be able to hook up my laptop to a large external display and then be able to work while sitting on the sofa/bed.

I'm looking for a keyboard that's:
(1) Wireless
(2) Has no numpad, or at minimum has the qwerty part of the keyboard centered
(3) Overall good in build quality, key feel
(4) Not expensive

I was looking at the Microsoft keyboard (http://www.microsoft.com/hardware/ultimatekeyboard/default.mspx), but it seems like it'll be expensive. Plus, it hasn't even been released yet, so it's a bit out of the question.

Yeah! Something like the second one. But the build quality doesn't seem very good, and one of the reviewers advised against it for touch-typists. I'm really picky about my keyboards; I actually get problems when there are slight variations in key spacing, physical feedback, etc., so it makes the search ever harder =\