So I have the chance to get a ZR3 for $175.00 brand new in the box, should I jump on this? I am limited on funds and do not have a radar detector yet, all of my tickets have been Laser related but I dont know what type of Laser there using up here in Alaska. Been searching on the net about the ZR4 and thats what I wanted till I started reading about them at this site. maybe I should get something else? I driver a Yellow Dodge Charger srt8 superbee treid to post pics but to new.