Dark skies and larger apertures mean thousands and thousands of objects are easily visible (literally thousands of galaxies are visible in a 10" telescope in dark skies)
Your choice also really depends on where you are going to use the telescope.  Cities have a lot of light pollution so larger apertures don't help as much as you might think in a city (they do help).  If you have access to really dark skies with no light pollution... aperture is really helpful.  If you have access to dark skies, I would always recommend buying the most aperture you can: 1) carry and 2) afford.   Dark skies and larger apertures mean thousands and thousands of objects are easily visible (literally thousands of galaxies are visible in a 10" telescope in dark skies)