While I am a very longtime radar detector user (I owned the original "Fuzzbuster" the Escort Passport, the Bel 745i) and currently own both an RX55 and RX65 I am totally confused as to whether software updates and their respective number designations actually represent an improvement in operation or whether they represent an internal company control number used for reference that may simply mate an existing vendor's component to a new vendor's component without any improvement operationally. Everybody seems eager to compare software numbers and debate the worth,or lack thereof, between the latest and greatest and previous numbers. This holds true for the V1 the RX65 and everything in between. Can someone actually state the most recent software means the best performance?? These things seem to be upgraded fairly often and since I have a very early version RX65 would I benefit at all to buy a newer version or don't bother??