As other wrote, the Generations/T30 Springer is a great version (pic below). The same goes for Sgt. Kup. Generally a number of Generations toyline look great on a IDW shelf. I think their Brainstorm blows it out of the water. As to Cyclonus, you can check out MMC's Boreas, but he takes some artistic liberties. If you're (or anyone else is) interested in the Maketoys set that turns Classics Cyclonus into MMC Cyclonus, send me a PM. I don't need mine I and can sell it. In terms of scale, MP carbot scale works well with the CHUG scale actually. Below you can see C-Creations' Prowl with the Lost Light Crew. I'd actually prefer Rodimus was this size - He'd work more with MMC Megs and CW Ultra Magnus IMHO Here are my pictures of the IDW crew, which relies mostly on MMC and Hasbro's Generations, so you can see how they work together. The only one I think could be different - bigger to be more specific - is broadside.