The Dirties vs. The Final (which you liked more)
Both films are revenge flicks about school students going to extreme measures to exact vengeance against the bullies who abuse them. While The Dirties is definitely a memorable film that will stick with me for awhile, I think like The Final more since that film depicted a resolution.
I like both films equally and while they both bring different things to the table, my only lament with The Dirties is that they never gave us a solid ending to the entire thing. The trailer for The Final is below and it's also free streaming on Netflix if you haven't seen it.
http://www.youtube.com/watch?v=tIlEJiEOqQgp