Soundwave had two major alternate modes in each film: a satellite in ROTF, and a Mercedes in DOTM. Which did you prefer? For me it's the satellite. It just perfectly fit his character: a spymaster and communications expert who can hack into any device on Earth, and who can deploy a minion to do his bidding. The way he spied upon Galloway and sent Ravage to get the AllSpark shard is awesome, all the while hanging in space orbit watching the events he set in motion, is superb. In DOTM, I thought he'd got a major stepdown. Though plotwise he did most of the spy work (recruiting humans in the 1970s), it was really done offscreen; he had the show stolen by his minion Laserbeak, and he ended up as a Decepticon Bumblebee (ie a clone of an Autobot in comparison to having an original role previously). We all saw how easily he got killed off - as one of the original Decepticon commanders his role deserved better than an underdog imploding his head. What mode did you prefer?