Don't forget to consider IRROPS as well. I live equidistant to BOS / MHT / PWM, so the options to get home are numerous with the various connecting hub flights to each airport. I can't attest to B6's IRROPS procedures, but being able to quickly rebook on the app is a plus.

And of course there is now the added bonus, with Logan's hub status, that direct flights to AUS, NYC, LAS, SFO are all options!