My biggets disappointment wiht revoltch, aside from the ugly choice of DW looking Optimus, was the way the sculpting gets in the way of posing sometimes. As an example with Megatron, tring to get his foot pointing to the side for balance ends up with it pointing down.

They are very dynamic though and one little challenge I like to give myself is to try and make them look bored or just standing around. Its harder than one would think

I do have all of them though and think Megatron and Hot Rod are the best. I must say, overall I like them.