I think that where you are in the spectrum of; amatuer----semi professional-----professional determines determines a great deal.
As an amatuer with a day job (well sort of a "day" job) I would look for the following;
1. a band that plays a musical style/genre that I enjoy
2. charts that are within my modest means
3. mature, responsible bandmates that I enjoy being around
4. a flexible schedule that I can work around my job and other committments ( this one is usually the deal breaker.......)