If you don't like small guns don't buy one. My preference is glock. They are ugly but fit my hands the best. They always work. I can't say the same for the kel-tec and sigs I have owned. Your experience may vary. You have to either rent from a range or bring some CR buddies shooting and try everything. I would suggest you start with 9mm as a 2nd handgun. Glock 17 if it fits in your hands. Whatever you feel is most comfortable that is what you need to buy. Only you can figure out what that is with testing.
Take me out sometime. I have a glock 21, 26, and a sig p238. You can try all of them I don't mind.