Warrior, thanks for the interesting post.
We looked at 30 footers up here in the Pacific Northwest, and the Catalinas aren't bad and I believe it's a plus that you can still buy parts for them from Catalina. Buying one that is as "young" as possible isn't a bad idea.
A Cal 29 or 30 is also an option, but not all are going to be in great shape. You can also check out the Islander 30s in your area. Our preference ran to the C&C boats, and looking at both a 29 and a 30 may be worth your time (they are significantly different). We liked the build quality of the C&Cs, and they are pretty simple yet fun to sail.
Here's one of my favorite sites about sailing So. Cal in a 30 foot Islander:
http://inetd.com/Boat/SanDiego05/
Given the notes about your recent boat, it sounds like you would like something easier to sail and more responsive, but maybe not super performance-orientated (J-30) or with an overly complicated rig. There are lots of thirty footers of this type.
Just out of curiosity, did you have a Nor Sea 27? We just looked at one for fun, and I was wondering how difficult it was to sail (weight, rigging, etc.). It's not uncommon for some people to start with "overly built" boats for their needs-- Don Casey writes about this at the beginning of his "This Old Boat" book.
Good luck!
Jim H