I love the 1600mm. I have about a dozen ASI cameras and this camera is the workhorse of my collection. I had the 1600mm cool and it performed well and I upgraded just because... to this ASI1600MM pro. It's currently mounted on my RASA with narrowband filters. The one negative comment I have is the above example images are extremely poor compared to what I see the 1600mm pro capture. I suppose that's a plus? because you will likely attain superior images to what is advertised!
Coming from DSLR and OSC cooled camera, changing to ASI1600MM-Pro has been a huge improvement. Pre-processing way easier, and post-processing not much of a big deal, as instead many people kept saying would have been more time consuming.
Bit of a learning curve if you are new to cooled monochrome cameras as there are extra steps to imaging but you will be rewarded with excellent quality images.