I was part of DreamIt Ventures last summer - it's an excellent program - certainly one of the top accelerators in the country, providing access to a tremendous amount of mentoring and connections / resources. The DreamIt partners put in a lot of effort and are very well connected in the area, meaning lots of useful, targeted introductions, mentors, and speakers. Philadelphia is also under-rated as a startup town - Philly Startup Leaders is extremely active with a wide range of entrepreneurs and there are a number of other meetups, as well. I'm clearly biased, as it was a great experience for our startup, but I would highly recommend the program.