Aperture always wins regardless of where you observe. The old rule which says that smaller apertures are better for city viewing are all rubbish. From my mag 5.3-5.6 suburban skies, my 10" GS always shows much more detail in all DSO's then both my smaller scopes. In fact for me, the minimum for worthwhile observing is with my 6" from such skies. But I do agree that there is no substitute for a dark sky. A smaller scope under dark skies will always show much more than a large scope under mediocre skies...period.
My 2 cents.
Darren
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