I actually really like these figures. Yes the battle damage sucks, but if you can look past that, they are pretty cool figures.
My Megatron had loose ball joints on the hips, but a little plastic wrap around the ball and BAM tight as can be. This version is more toon accurate than the voyager is. He is very poseable, and his cannon is removable. I really like this guy.
The Optimus Prime is just as cool. It is basically a heavily modded cybertron mode Prime figure. Transformation is relatively the same with a couple extra steps. Looks great in both modes, truck is very sleek, while robot mode is very brutish. He looks like G1 Prime. The axe is also very nice. This is one of my favourite animated figures so far, I just can't put him down.
The action feature isn't bad at all. Basically you turn the waist and the upper torso swiings back into place. It does click into place so you can pose him at the waist as well. Not to gimmicky at all.
I highly reccomend them