I have the G2 Bruticus CW set and have really enjoyed it. I feel that aside from the Combaticons, the only of the 'standard' sized CW gestalts that have that level of variation in the figures is Defensor.

Superion and Menasor have limbs that are too samey - they're not super engaging to play with.

No experience with either of the Titan Class combiners mind you.