There is better, there is always better no matter what boat
But I think you could do far worse than a Catalina myself, but condition trumps everything, do not buy a project
, but something that you think is in perfect condition, it won't be, but likely what needs doing re minor items, just do not buy a boat with wet decks or something thinking you will fix it.
There are so many good 30ish boats for sale
you wont be able to look at even a small percentage of them, and I would take a range of sizes, say 28' to 35' and look, many boats make much better use of space than others, one reason I got an Island Packet
was their efficient use of space.
Trust me, the tiny house community could and I believe has learned a lot from the Marine
world, tiny living on the water
has been a way of life for far longer than any of us has been alive.