I agree with your message John, a collimated, properly cooled, "good quality" 10" or 14" newtonian will visually beat anything that any 6" scope can do. The refractor may have a `cleaner' aesthetic to the image (which I admit to liking) but the resolution will be less and it will be much dimmer compared to the bigger scope. My post above was trying to explain the `focuser on the wrong side' theory, not suggest that the 6" would show more.
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