While you're considering progfests, look at Bajaprog:
http://www.bajaprog.org
Banco, Le Orme, Circa, Riverside, Rocket Scientists, Cast, Omni, and 13 (YES THIRTEEN) more bands. The VPP (roughly equivalent to (but better than) ROSFest Gold or Nearfest Patron) are only $150 each. That includes a nice polo shirt, program, poster, and 2 parties - a pre and post party that are outstanding.
If you're thinking about airfare for the east coast fests, you should think about Bajaprog. VPP tickets are on sale now (I have mine!!)