Passport 9500ix
If you enjoy receiving speeding tickets, the 9500ix isn't for you. However, If you'd rather keep your clean license clean, the ix might just become your best driving buddy. It's got a built-in GPS unit, not for navigation, but for locking out false alarm locations and for detecting speed cameras, speed traps, and red-light cameras. Brilliant. Worth the $499 price of admission. Order it directly from Escort.

[Disclaimer: I can only recommend this device to safe drivers who move with the flow of traffic. If you drive like an idiot, you DESERVE a ticket (or worse) -- and thankfully, no advanced technology will save you.]