I got a Mayhem G3 from
here.
Cant recommend enough. Blindingly fast, beautiful screen (ideal for widescreen DVD), built in WiFi G, exceptional price, great service. You could get it delivered to your US address (takes about 7-8 days from ordering). Comes with a carry case as well. I would not personally buy via Circuit City, Best Buy or Comp USA or any store for a PC or laptop, too expensive you are paying for their store overheads after all. Just my thoughts.
Oggin
edit to say the DVD hardware /software may get locked to Region 1 but there are fixes out there on the Web I guess.
second edit to say the adaptor is 115-240 v input so you just need to use a UK lappy cable to hook up to UK wigglies. Also I have used a custom key selection in Word (I used Alt + $ - within the Insert Symbol submenu) to produce the £ sign.