Morton from mine at least, the Skywatcher 180mm Maks out-resolve most C8 or Meade 8" SCT's on lunar and planetary. Contrast is also better. The image is however noticeably dimmer in side-by-side comparisons with a C8.
A C9.25 EdgeHD or 10" Meade ACF however is a match in most respects with better light grasp (aperture) and if a good one came up secondhand I'd say buy it.
Ultimately up to you.
If I had $25k to spare and the time to go observing, I would definitely order one of the APM 275mm f/14 Maks currently on Astromart without hesitation. But I haven't got the time anymore. Maybe when I retire...
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