I have just been down this path, and purchased a Celestron Nexstar 6SE. The decision was made by determining my real needs and then making a cost effective decision.
In my case, portability, a degree of ruggedness, dust resistance and the ability to stay on 'target' to enable sustained observation are the real needs. I was dubious about a 5" (there's that aperture thing again!), the 8" was bulky and too expensive, so the 6" was the winner.
Am I pleased with the scope? Absolutely!! It has kicked all the goals, and I'm even starting to learn about the sky.
And guess what? When I learn more stuff and actually stay at home a while, there is always room for something with heaps of appeture, perhaps requiring a ladder to reach the eyepiece?!
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