the g1275t tends to sound a bit, er, shitee. IMO. the vintage 30 has a big mid hump thingy going on (which you may or may not get on with), and while pretty versatile, has quite a definite modern slant. Kind of like the engl of the speaker world- it's versatile, but there's no real denying that it's designed with modern tones in mind, but'll do the other tones pretty well.
In my opinion, of course. twin likes his g12t-75 (whatever the name is!), and he's probably right.
:drink: