To your list of considerations I would also add ease of alignment for those of us struggling in backyards without fixed, perfectly aligned mounts.
I am now moving from a 120mm/ f8 achromatic refractor because of the time it takes to set up not quite properly on any night. I'm thinking a 150mm SCT with built in Goto drive/batteries etc that I can plonk on a solid stand should be an ideal solution to my issues.
Does that make sense?
John
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