IMHO Apple & Oranges. I see QHY* cameras as value cameras as in "bang for the buck". Having said that SBIG is quality engineering. You get what you pay for and they also nicely integrate all their Filter wheels, self guiding, AO, etc...all their accessories. All works out of the box. If I had the $ I'd get an ST10 "yesterday". Will do one day - just a matter of time
