I am still using 5.5.xx.xx - I know, it's moved on a bit, but I did not need to move on for the sake of it, Nero 5.x works for me (mostly, see below), and until I replace my hardware with newer drives it does what it says on the box
Ner o6.x just seemed to support newer drives, DL burning and incorporate lots of other non-essential stuff unless you needed it.
The only strange anomaly in this part of the universe with Nero 5.x, and I have 22.214.171.124, is that file dates are changed and not kept as-is - this is that 1 hour is added on to the file date stamp, 10:00 becomes 11:00, 01:10 becomes 02:10, etc. It does this whether I tell it to use the original file dates or add an entry in the nero 'use this' field. Any thoughts? I know, upgrade will be the answer - but it seems strange that 126.96.36.199-188.8.131.52 both do this - not sure if a much earlier version did - and this is a new install, so reg entries should not be the culprit.