Which is easier to come off, methadone or subutex (buprenorphine)?

Depends: Both can be tough to come off unless weaned off in an extremely gradual manner.

Narcotic wean: Both Methadone and buprenorphrine are long acting opioids. They both can cause withdrawal symptoms from abrupt discontinuation. However, under physician guidance, you can be weaned off on both with no or minimal withdrawal symptoms. The key is slow weaning process.