You said that graphics aren't your stronger point, so I guess you should try to find a graphic designer to be your partner and let him decide which tools are the best. It would work better if your partner has your same ambitions, commitment, and level (in his own trade), and it will be a plus if he/she is an Stencyl user too.
So, if you are a pro, full time game developer, looking for money to buy a new yatch, you should find a seasoned and ambitious artist to help you reach your goals... if you are an amateur developer making games on weekends just for fun and to get some experience, you should find a graphic design student.