Best Champ of Each Class. Go.
For me:
Omega Red. Super versatile, great damage.
Doom. Power control, damage, nullify.
Aegon. Shines in almost all tough content. Irreplaceable for Abyss.
Corvus. Super versatile, great burst damage, insane in AW and AQ. While many say he's bad in 6.4 and 6.3, he does better than you might think.
Ghost and Quake. No explanation needed?
What are your thoughts