Liverpool for sure on the top of my list. Second is QPhaha. Third is Spurs. Maybe it is just me, I don't feel that kind of hatred for Arsenal since several years ago, maybe I'm more feel sorry for them, lol. 9 years, people. Also for several years ago, I might considered MU, but at the moment, I don't have that kind of hatred through their fans and players. And I always think Chelsea and MU fans generally have a mutual respect each other nowadays much more than with any other clubs. Maybe it is just me again.