I use an Escort 8500 X-50 with a heads-up HARD display in my helmet. I also move this unit back and forth from my bike to my BWW car and Ford pick-up. So far, no complaints and no performance awards. Obviously, with instant-on radar you need to have some traffic out in front of you - but the 8500 regularly picks up signals at 5+ miles.

"I would rather wake up in the middle of nowhere than in any city on earth"
Steve McQueen