I'm not a big IPA fan, but more of Scottish Ale - Porter type of person. But to your tastes. The Blackfoot Brewery here in Helena makes a most excellent IPA, as does the Kettlehouse in Missoula... that being IIRC called their "Double Haul IPA" For a fairly mass produced beer, the Ephesian "SuperFuzz" is good...I call it an IPA with training wheels.