That's quite a haul! I have two Canon 600EX-RT (Radio Controlled) that I bought from the Canon Refurb store at a steep discount from a new. But for the controller, I bought the Yongnuo version for about $80 (Compared to almost $300 for the Canon version). So far the Yongnuo controller has been working like a champ! I have heard good things about the Yongnuo flashes and if I ever get any additional speed lights, they will probably be Yongnuos.