For me (not in any order)
1)Mark Hunt- crazy hard hitting samoan.Like a tank abbot with
skills, his chin is like almost invincible.A strike from Mirko's
trademark left leg kick failed to knock him out.
2)Mike Tyson- Fast with lightning precision strikes.Overall very
fast hits packed with enormous strength.Good time reaction and
weaves in and out of enemy's attack, dodges and sets up a
counter-attack.Agressive as well.
3)Fedor- Good stragetist with overall skills.
4)Mirko- very good standup game with nice combinations but lacks
grappling skills.
5)Bob Sapp- nice to watch for entertainment but for serious
matches.He simply cannot make it.Very agressive.