Re: Catalina 22 or 25?
The C-22 has a bit larger cockpit than the C-25. The Capri 25 has a larger cockpit than either, and a smaller interior than the C-25, since it is meant more for racing than sailing. It is also a faster boat.
I found the C-25 pretty easy to handle myself and often sailed it solo, even without an autopilot.
Cabin space is most useful for overnight trips, but having a real head behind a closed screen is nicer on the C-25, and having a galley is nice if you plan on having picnics or meals onboard.
boats that I sail on regularly: Pearson 28-2, Rondar 505, Yankee 30, Blanchard Junior