I have an SX 36 mm wheel, and it fits into my setup very well, it is a good bit of gear. I am using a Tak reducer and my distance is 117mm so it is easier to fit in. I don't use the window on the QHY9, I have it mounted directly to the camera. That's just personal choice.
The only complaint that I have is that the wheel can be a bit tempermental, even on a good powered hub. There is a firmware update from SX if you are using a 64 bit system. Some people advise to switch the auto reverse function off as it works better. Haven't got any data on that one myself, however, I took the advice and used it.
If the filters weren't so dear, I would have gone for the FLI wheel, the CFW 8, I think I looked at.
Swapping filters and wheels is definately a pain if you want to do narrow band and LRGB. This wheel definately simplifies that.
