Posted By Tom Licha
I bet the 6 inch APO is much better and the 5 is still better. A 8 inch SCT (mass production) ist most probably not good collimated enough and not fully collimatable at all.
Like the other stargazers mentioned I agree that the even better *and* cheaper view will be a 10 or 12 inch Newtonian. It can be collimated easily, has only one active optical surface and in the center of view there are *no* aberrations at all! (Well, if the mirror is excellent...)
mehr freude. http://www.licha.de/AstroWeb 49° 13' 54" N