Garmin prices from Amazon:

nuvi 270 (discontinued): $140
nuvi 275t: $240
nuvi 775t: $321 $455 (the cheaper price was on the non-Europe version)
nuvi 1370t: $450 (brand new, available any day now)

The 275t adds real-time traffic and Bluetooth. The 775t is widescreen and adds the lane assistance as well as A2DP support. The super-cheap price on the 270 is appealing, but then the real-time traffic and whatnot on the 275t sounds appealing.

Hmm....