Oh man, I can talk about punk for hours. First got into it back in the 7th grade and I've been a fan since.
I'm not really as into it as I was in middle school and all throughout my high school years (been more into 80s/90s indie rock and old school rap in the past few years), but I still find myself listening to all my old favorite punk albums all the damn time.
When it comes to punk I pretty much love it all, but I definitely like early 80s hardcore(Zero Boys, Bad Brains, Minor Threat, MDC, Reagan Youth, JFA, Articles of Faith, Dayglo Abortions, etc) and early/mid 90's punk the most (Crimpshrine, screeching weasel, Mr. T Experience, J Church, Gaunt, Sicko, Scared Of Chaka, Dillinger Four, Discount, Radon, Tiltwheel, Leatherface, etc). There were so many good bands that came out of the early/mid 90s that definitely got overlooked a lot.
Also, my favorite punk band of all time would probably have to be Jawbreaker, so I also love any Jawbreakerish sounding band.