So I've had v3.864 for about 1.5 - 2 years and have never been happy with it -- previous version was 3.813 which i foolishly upgraded. The problem was terrible ghosting issues; every signal was either 2 or 3 and so I gave up using the bogey counter and just relied on arrows and detection.
Well I finally sent it in and wrote them a nice letter detailing the problems and previous calls I initially made to them after upgrading and asked if it were possible they could fix the problem. They ended up tuning it up, doing something to the software and sending it to me next day for free!!
I just drove around to some speed signs that would always ghost 3 for me. it says 1 now!!!!!!
Bottom line is great service and that there IS A SOLUTION to the ghosting issues in this version.