OK here goes nothing, I am going to try to word my question as best I can by prefacing it with several caveats. Think of all the scopes you have owned by various manufacturers, and without going into specific issues with the scopes other than optics and general function were your experiences with each scope positive, or negative to point that you had to get something else? Aperture Fever is not included as a negative either.

I will set the tone by going through my scope list, the purpose of this is to get a frame of reference for all the different manufacturers.
Orion 80mm Refractor was OK for first scope
Orion 8" Dob Again OK optically fine, (helical focuser, issues there)
Televue Genesis Great Scope
Televue Solaris Great Scope(under used)
Meade ETX great little scope, (poor finder)
Orion 12" intelliscope So far a very nice scope, untested under really dark skies to date.
I have also had a couple of home made scopes but this is just to figure out about different manufacturers. Thanks