I'm sure you will get varying opinions. I have had escort radar detectors in my cars for years and they work flawlessly. I presently have an Escort 8500 x50 in my car and just ordered one yesterday for my Streetfighter along as well as the H.A.R.D.
I've gone through a half dozen in the past five years and settled on a Bel 655 for my car (anything 655 or better should do) and a Adaptiv for my new bike. I didn't have luck with the Escort 8500 over about five months it warned me late consistently and chattered neadlessly. At least with the chatter on the Bel I also got warning for the actual traps and near misses. I'm not completely sold on the Adaptiv but I do like it so far. So Beltronics and Adaptiv get my votes for now. -Pk