120 is good but the 10" is one of the best value for money scopes i have seen
The 12" would be good, but i think for me to big and heavy.
Also the 10" fits in my car and the 12" would not.
The 31mm is a big eyepiece and does throw the scope out of balance a bit. Most of the big ep's do.
The 30mm SV would not be as good as any Pano. But for its price its not to bad. Would work better on a larger FL scope.
It was very pleaseing to find 3c273.