I have been looking into getting Thundercracker for a while, But I found someone sellling a 20th Anniversary Optimus for $82 MIB. I was wondering which would be the better buy? The Thundercracker is from an Ebay store and he has about 8 instock so I'm fairly confident I can wait but should I? Is the 20th MP Optimus that great? Also I do not have an Optimus. I was waiting until I got a MP one to have one so he seems like the right choice. If so whats so diffrent between him and the Takara one?