Got Megatron on Monday, here's a quick review.
I'll do some pictures with him and Alternity Convoy soon, haven't had him back in vehicle mode yet even!
Vehicle Mode 
The colour is lovely, lots of detail on the body there. The panels didn't seem to fit together as well as Convoy's GTR, but I haven't transformed him back yet to know if this was just how he was put in the packaging.
Robot Mode 
Transformation seemed a lot easier than Convoy's, his torso ends up nice and solid, the lower legs are less so though. Not a big problem, but he doesn't feel as solid as Convoy (again).
Weaponary 
Swords are really cool and fit nicely into his hands, they also peg securely onto his thighs for storage. Megatron also has wrist weapons like Convoy, they are little blades that flip out from the seatbacks on his forearms.
I'll need to mess with him a bit more to get the feel of his posability, but in the short time I did pose him I wasn't found frustrated by the joints and range he has.
Overall 
Cool, well made, well painted, not quite as solid as Convoy.
*Oh, additional, I eagerly await someone translating his bio, if it's anything like Convoy's it'll be mind-boggling!
