I have PSC 31 (1995). I've owned a larger Beneteau which was great when we were living aboard in summers and had a teenage son and friends. It was perfect for us in that situation.
Now we appreciate the openness of the 31. It's much more comfortable in the main salon. We like having drawers everywhere. While we can't sleep as many aboard, we now have a garage where we put the dog crate, dinghy, sails and tools.
We sail on the great lakes where wind changes direction much of the time causing uncomfortable chop. The beamy Beneteau would be tossed to and fro while the PSC charges through. The big gunwales make me feel secure when I have to work on deck in a blow.
I'm an engineer and everywhere I look on the PSC I get a sense of satisfaction about how careful the design was to yield the best result. When marketing doesn't try to change the design every couple of years the company gets a good chance toward making perfection and it shows.
My choice was between a 31 and 34. I like the canoe stern but felt it took away too much on the 34 and I couldn't afford a 37. I also liked having the head at the bottom of the steps in the 31 to avoid traipsing water all through the boat when it's raining out. The head is a bit cramped and you have to be content with showering sitting down.
As to size, I'm 56 and not feeling any younger each year but I can raise the main on the 31 without problems although the genoa sheets take a lot of strength. I'm not sure my wife and I could handle anything larger (we currently have a sloop rig).
I can't imagine anyone regretting buying any of the PSC's. When you're adding some equipment, it will be for you - not the next owner.
PSC 31 #84