I have a Canon 5D which I use with my Calumet Travelite strobes for portrait use. I have been doing more events lately and my Speedlite 550 is not up to the challenge. I'm seriously thinking about the Quantum system. Does anyone know if it is compatible with the Travelites in case I want to use one or more as fill in a large room? Also is the Quantum QFlash 5d-R compatible with the Litlink transmitter/receivers that I already purchased for my strobes or do I have to buy the Quantum FreeXwires?