If you're comfortable with and skilled at the practice of greasing palms, RI all the way. It's the Mexico of New England.
I'm going to caveat this some.
If someone were to leave Mass (or CT) for RI as a 2A supporter, for whatever reason such as having a job in say Uxbridge or Worcester or Fall River or Seekonk, there are towns out in the western and southern part of the state that are largely clean and I would argue better than NH. If you live in West Greenwich or Exeter or Hopkinton or Burrillville, you're largely fine. Newport County is also an option and while Aquidneck Island is pricey, Tiverton is a solidly pro-2A town and inexpensive. Little Compton is very expensive but would be a great place to live.
I've read two books about RI political corruption and the first is "Scoundrels" by Paul Caranci of North Providence:
Scoundrels
In Scoundrels, Caranci states that RI has lower corruption prosecution and arrest rates (including by the Feds) than other states like Mass, IL, TX, etc. With RI, the state is so small and everyone talks to each other so what corruption there is becomes more newsworthy and talked-about. RI's towns historically are more than just bedroom communities (looking at you, southern NH) and are very close-knit. So when a member of the town council uses his influence to get his half-witted brother hired to the town transportation department, everyone's going to talk about it.
The areas I would suggest a 2A supporter to move to, unless you have to live in a city, are generally absent of overt corruption. Small, indirect forms of corruption are present everywhere and in many different contexts as Caranci states in his book. NH is no different.
New Hampshire gets D- grade in 2015 State Integrity Investigation – Center for Public Integrity
Gill defamation case goes to NH Supreme Court
New Hampshire Has a Confidential List of Officers With Credibility Problems
New Hampshire’s impeachment crisis of 2000 - NH Business Review
Twelve Years Ago in New Hampshire Judicial Branch Corruption …
Rochester loses Supreme Court fight on housing park
Supreme Court hears Rochester housing park case, again
Those last two links are about Rochester suing its own zoning board and a husband-and-wife pair of developers. I found an article last summer about how the developments were filthy and unmaintained and falling apart but I can't find it now. NH has its fair share of corrupt sh*thole cities, just like everywhere else. Just in RI, people know better before moving there. People outside NH largely aren't aware of how crappy places like Rochester, Laconia, Franklin, Manchester, Nashua, and Berlin are.
OP's post is originally from last year so I doubt he's seriously considering this thread still. Like I said, I'd be glad to explain the pros and cons of each state if someone has a realistic question about both RI and NH. Both states have their ups and downs and each person has their own individual needs in life.