Beast Wars Reborn question

Hey folks,
I was thinking of getting the TM SP DX Convoy and Megs at first but I realized that they're not that show accurate, other than the colour, that is (especially Primal's) so I'm hoping to get the Reborn version instead. Does anyone know what's the difference between Takara and Hasbro's version? And how big are the figurines? How much was the retail price (for Takara and Hasbro). Thanks
EDIT: Forgot to ask one more thing: is megatron's tail detachable to reveal his hand? If not, which version has a detachable tail?
I was thinking of getting the TM SP DX Convoy and Megs at first but I realized that they're not that show accurate, other than the colour, that is (especially Primal's) so I'm hoping to get the Reborn version instead. Does anyone know what's the difference between Takara and Hasbro's version? And how big are the figurines? How much was the retail price (for Takara and Hasbro). Thanks

EDIT: Forgot to ask one more thing: is megatron's tail detachable to reveal his hand? If not, which version has a detachable tail?