I've owned the bel rx65 for a month and now the newest V1. Here are my observations.
The rx 65
has very good range on the highway. It often falsed to other detectors on regular ka band and pop on the highway. It does not go to full alert until you are in sight of the cop. Regardless of what I've read my rx65 falsed all over town. Another thing I didn't like about the rx65 is the display faced forward. If you mounted it by the mirror it would be hard to see the display and very hard to change the modes of operation. Last about the rx65 it had to be sent in for warrnaty work for a service required message after about a month.
V1 pop2 3.821
The arrows are very cool. Range is great. Mabey the rx65 seemed to false less because of the automute feature :?: . The V1 is amazingly quite on the highway. I've not seen any falses on the highway. I've never had it to give a ka false from another detector . In town it falses often but I'm telling you it is not much different than the rx65. The auto dark feature is really great. I wouldn't mind an auto mute feature on the V1 but that's not a big deal. I purchased and installed the concealed display a couple days ago. This might just be the best feature of the V1. I have the detector mounted on the passenger side of the rear view mirror and the concealed display on my steering column. All the info is right at my finger tips (I think the concealed display would be a little better if they could put a speaker on it.)
Anyway, I hope this helps someone that is on the fence. This is my only my personal opinion please don't hate me for loving the V1.