Activators: Cliffjumper (what? I like the head-sculpt more than the Bee version)
Legends: never had much experience with the legends, so I'll go with Bumblebee.
Deluxe: Electrostatic Soundwave/Soundwave (Arcee and Rodimus are very close as well, but I just like this version of Soundwave, especially the paint apps for the Electrostatic version)
Voyager: Wreck-Gar (something about a garbage truck played by Weird Al, and then that character getting a toy intrigues me
Leader: Bulkhead (his voyager was okay, but this guy is heads and shoulders above it
)