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Welcome Dez, if you're looking at 10" Dob where you would use the OTA (the tube) later for imaging on an EQ mount, I'd recommend Saxon or Skywatcher Dobs over the GSOs. The Saxon/SW 10" OTA is more rigid, has a better finish, the mirror is much better supported, collimation is easier and less frequently required, and the mirror is pyrex which has lower thermal expansion coefficient. Scope is made in China but the mirror is made in the US, at least it was when I bought mine - check with supplier.
I've owned 3 mass produced dobs: 8" GSO, 12" GSO and the 10" Saxon. Though they are all good scopes, of the three the Saxon by far produces the clearest, sharpest, highest contrast images. The difference is not nitpickingly minute - it's quite outstanding. So I've become a big fan of the Saxon 10". Puts smile on my face every time I use it.
Now like I try to say every time I bring this up: it could well be that I got lucky and ended up with an exceptionally well figured mirror so that my scope would not be representative of a typical sample. But even if that's the case, the Saxon/SW OTA's better suitability for EQ mounting still remains.
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