Go see as many as you can, educate yourself on each make. Don't buy anything until you're researched the hell out of everything.
Catalinas are okay boats. Many out there to choose from. The main complaint that I've heard is that they tend to leak...stanchions, chain plates and at the rub rails.
Each boat will have its pros and cons. Don't fall in love too quickly Research, research, research.
Don't forget that this is your first boat and you many want to sell it within a few years to get something bigger. Good luck on your search.