Hi Peter,
just for clarification GSO scopes are generally rebranded across the globe. Here are a few examples:
TPO -
seen here at their Website and
an image and
another here from one of their RC16's (This is a GSO RC16).
GSO - One of their
images here. And
another here.
Astrotech also have
rebranded GSO scopes.
TS have also
rebranded GSO scopes.
I have not bought one because I have had other priorities, though I should have bought one and been well ahead by now. I did not have to do much to get my 12" scope working well. I did change it from a tube to a truss and I have used it with several focusers and rotators. I was going to change the mirror cell over to the new one but did not in the end. The scope holds the heavy payload I am asking it to hold well and it never flexes (the scope is holding an Moonlite Nitecrawler 30, AOX, STXL11002 with integrated filter wheel). Focus is always within a few hundred steps on my Moonlite Nitecrawler 30. It is a very affordable alternative to the more expensive scopes. The scopes are not like your scope but they do produce good results generally.
Why are you searching? I am most interested in your reason.