I've been waiting to learn gelling (is that a word?) until a sane gel solution came out, and I've been waiting for an in Flash Canon RF solution. Thankfully the 600-RT gives me both which is why I popped for three the day they released. Now I want to expand this wonderful gel system. The manual indicates that a 3x3 3rd party gel will work fine, but for some reason the flash won't report it correctly so you have to set a C.fn to turn off gel notification (not sure if this is a problem with a pre-2012 body).
Anyhow, should I roll my own gels or wait for somebody to come out with a 600-RT gel kit? If roll my own, any suggestions for a kit to buy? I'd like the CTB's, CTO's, Green, and a handful of Cines maybe. Would rather buy a pre done kit but I don't want to wait too long!