The RX65 is ... going on craigslist
I got it from Roy 3 months ago because my old 3.851 V1 pissed me off with it's Ka problem but after I got it back from VR it did a great job on Ka (2.4 miles detection on the last trip).
The RX65 has very good range (didn't compare directly with the V1) and false less but here are the reasons (some are just my personal taste) I decided on the V1:
1. Arrows, with the RX65 I have no idea where the source is and I hate it.
2. Upgradeable, with new detectors coming out I don't know if Bel would do a trade-in or not and I don't think they can beat the price VR is charging for upgrade. I might as well sell the RX65 now and back as much as I can before new things come out.
3. Conceal display, what can I say.
IMO, if your V1 detects Ka well, has no "E", you can put up with some false AND you are not in VA or DC ..nothing else beat it.