new member/non-bmw owner, but looking to jump ship from another Bavarian brand...
Here is an amazing resource for radar/laser:
https://www.rdforum.org/index.php
Or, if you are interested in watching reviews (and also learning), go here:
https://www.youtube.com/user/TravelCam1111
Vortex is AWESOME. He can provide you with a TON of information and is very helpful, along with being a very active member on rdforum.