I'm trying to buy an RNS-510 for my pre-FL Octavia II ('07) but cannot find much up to date information on the latest versions.

The best I found was from 2004 on this forum. Am I looking in the wrong places?

Which versions do what or have which screens?

What is the difference between A, B, C & D versions in terms of hardware functionality?

Is much of it down to the firmware & software version installed?

How do I tell the differences between the models to ensure I buy the best one (I want one with LED screen, 7-digit UK postcode search, auto rerouting, speed camera database & compatibility with MFSW & OPS (newer CAN Gateway required).

Any pointers in the direction of info already posted or inside tips gratefully received.

Preferably before I tear out what little hair I have left...