I don't have a Logitech scissor switch keyboard, but I liked the illuminated keyboard when I tested it out at a Best Buy in Manhattan. It's got a definite tactile click to it, and the keys spring back. Thinkpad keyboards are all scissor-switch, and rght now I'm typing on an external IBM Ultranav scissor-switch keyboard.
WhiteRice: how is the integrated round touchpad? I'm using the Ultranav as my HTPC keyboard because it has an integrated Trackpoint. I happen to be a big fan of touchpad scrolling.