Re: Catalina wing keel or fin keel?
If you're planning on keeping the boat in the West coast there's no reason to seek out a wing keel and the question is somewhat moot.
If you're lake sailing it would depend on the lake. If there's a prospect of trailering the boat to different regions, a shoal/wing keel will facilitate ramp launching better than a deep keel.
If there's zero interest in racing, or in maximizing performance upwind under sail, then a wing keel isn't likely to be noticeably different to you and perhaps you simply choose the nicest/best value package you come across, as azguy mentioned.
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)