I'm not sure I agree with JDS that HW is at its best right now. It's certainly up there but 2 years ago it was better, even just inside the UFC. Two good HW's in Carwin and Lesnar are gone. Kongo, a solid gatekeeper, is gone as well. I haven't seen good replacements for them. Outside the UFC, Fedor is retired and Kharitonov, a good HW, wasn't picked up by the UFC and hasn't fought in a year.
HW's probably thinner than it was a couple years ago.
"I've never been happy with my fights. To not finish is even more upsetting. I hate it more than the fans hate decisions. It's not the point of fighting. You're there to finish the fight." - Jon Fitch