My son picked out the DOTM Optimus Prime Playset because he wanted an OP with a trailer. He then wanted to get Megatron so he could have someone for Prime to fight. Looking for Megatron today got me curious as to how many of these playsets are available for purchase. From what I find, it appears there are/will be six total. Four have been released while two await release. Those two are the Shockwave an Ratchet. My question encompasses all six, but really is focused on the released sets as I have no info on the two to be released. It appears to me that the Prime and Megatron's playsets include commander class figures, while Starscream and Bumblebee's contain legends/legion size figures. Whats the deal with that? Where is the tradeoff for accepting the legion figures? Are their playset accessories more than what you get with Prime and Megatron? And, if anyone has the info, do you know what size the figures will be in Shockwave and Ratchet sets? I really don't get into the movies or toys from them, but I have to admit the Prime playset is kinda neat with a trailer. And, Megatron looks interesting being a dirty looking semi. Not that I would change my OP on the movies , but these toys are neat! Please let me know what you think about my question and any info on the unreleased sets. Thanks!!