I shot a friend's quite a bit when I was trying to decide on Compact or PCR. I liked the heft of the Compact, but for some reason, the beaver tail tended to chew a hole in my hand. Look at pics of the 2 guns, the Compact is more squared off, for want of a better term, where the PCR and P-01 are smoother. The only issue I had with my PCR was a tendency of the stock trigger to bite my finger, fixed that by installing a different blade. Also replaced just the front sight with a FO unit, much better. Later.
Dave