I got the ZWO-ASI533MC. Since I use an ASIAIR, I stuck with ZWO cameras. 533 uses the same sensor tech as the latest 2600 models. But is way cheaper because it is a much smaller sensor. I am getting good with the ASIAIR now. I really like it. This time of year all the good targets for my RedCat are not out. But, I was able to catch quite a few galaxy pictures. Here is The Leo Triplets and Whirlpool Galaxy: