All I can suggest is spend time at a shelter or adoption center and get a feel for the personality. If you get a cat (as oppposed to kitten) you will be more likely to find one that fits your situation the best. I've noticed there are always lots of 1-2 year old cats at our shelter. They say that is when they grow out of their "kitten cuteness" and bad owners get rid of them. To me that's when they are best because they are settling down and really showing their personality. Of course don't forget the older kitties. If you are looking for a good lap cat they can be some of the best.

Glad to hear you are thinking about getting a kitty.