Hi, MultiMuse.

P6 is more-or-less stable (AFAIK, with the latest SRs), but my advice would be to get familiar with P5 1st.

Why? 'cos maybe, in the not too distant future, P7 will be announced, and the upgrade cost to P6 will probably then plummet:-))

P5 was a BIG advance on its predecessors (after it got most of the bugs sorted out), and is now a reasonably stable work-horse. (There are always the occasional issues...)

P6 is very similar to P5 (with some enhancements), but if you're still learning then why not stick with P5 until you are comfortable with it and know the ins'n'outs of the various features?

Just my opinion....

Cheers,
Diolma