Originally posted by landofcourtness Also, I have non-godox flashes. Is there a way to use this transmitter with them?
You'd have to use one of the X1R receivers. They exists for Canon, Nikon, and Sony.
You won't have TTL support, though, and most likely no HSS either.
I wouldn't expect support beyond basic triggering (up to and including the camera's sync-speed) and possibly remote power level control (the latter is rather likely, AFAIC). You may also use the X1R receivers to trigger studio strobes via their sync-port. Again, only basic triggering (no HSS or even TTL) and definitely no power level control in such cases.
For cross-brand compatibility, the Cactus system is unsurpassed. However, Godox supports full compatibility between all the brand-specific trigger variants (e.g., XPro-P for Pentax) and many of their flashes/strobes. So if you only use Godox lights then you almost get the same flexibility, as you can share the latter between all your camera systems (as long as you have a brand-specific trigger for each system). Also, Godox offers a much larger range of lighting solutions. After the RQ250 initiative failed, Cactus is left with the RF60X only. The latter is a very capable speedlight, but doesn't hold a candle to the AD200, or even more powerful mobile lighting solutions from Godox, such as the AD400 PRO or AD600 (PRO).