Well a lot of research later you will soon find out that the new Escort Passport 9500xi with GPS/Internet ready among tons of other things will be the best bang for your buck.
I just picked this doozy up and cannot wait till it gets to the house.
Price a little steep, but hell, i'm 23, i'm sure I'll have more tickets, and i've already paid about $2000-$2500 in them, so I figured I can try this out and see how it goes.
It is not cordless so I will be running a little bit of wire to get the max exposure and distance with this device.
http://www.escortradar.com/passport9500ix-details.php



