+1 for Pixinsight its about he same cost and updates are free. But IP has Image Capture tools which I don't believe PI has yet, though there was talk of some users developing this. As I have Nebulosity for Capture I settled on PI, after looking at IP and AstroArt.
Suggest you grab the PI trial and give it a go. Some say its quirky to learn but personally i found with the video tutorials it was fairly easy and intuitive. YMMV
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