In todays' market with 50K you can certainly get a pretty decent boat in good shape in the 30-35 foot range... but you can also certainly get newer/maybe nicer for more money.
Some of the Catalinas mentioned are pretty hard to beat for liveability in the PNW.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)