I am mulling over the purchase of either the Garmin 60CSX or the new Magellan GPS that also has an MP3 player and a 2meg digital camera. Both of these support full topo map download and have the new SIRFstar chipsets.
Unfortunately, both are $500, and convincing my wife of the necessity of owning a 3rd GPS is proving tougher than I thought. Something sparkly ought to take care of that obstacle...