All of the poorboys products I have used so far, have performed exceptionally well. Depends on what your looking to do.
If I had to pick just 4:
SSR 2.5
PwC (have to try PwS)
S&W
All waxes and sealants.(couldn't go on living with just one)
I also need some more PP, I think my brother clipped mine. I noticed His silver A6 looking pretty clean these days. I'll get him back though. :hmmm: