I live in central MA too and always fly out of Hartford as parking is cheap and the airport is so much smaller and more efficient than Logan. If you must have TV's, then JB is the only choice. All of the Delta flights from BOS and BDL are on MD-88's without entertainment of any sort. if your flight is in the morning, the TV is full of infomercials and not very entertaining.
The bigger question for you is why not SWA out of BDL, PVD, or MHT? All have more direct flights than JB or Delta and all have cheap parking and easy airport access for dropoff's and pickup's (the Logan cell phone lot is in the middle of nowhere and the state police make you leave after 30 minutes - no gray area if flights are delayed. They also hassle you if you try and wait in the pickup lane at terminal A for more than 5 minutes). Also a choice with direct flights at Logan is AirTran which at least has XM Radio for entertainment and offers first class upgrades on day of travel for $30 to $50.
I have lifetime Gold medallion status on Delta due to 2MM flight miles on them, but I would not recommend them anymore - too many problems in the last 18 months and customer service is not a priority.
You didn't say when you'd be flying, but JB and Delta will cut their schedule back drastically after mid-April, so the options dwindle until the seasonal uptick in November.