You should try a Celestion Century Vintage, they are very light (neodymium magnet, 1.6Kg total! ), they sound like a V30 with a bass boost.
+1
i have one
sounds great even without a cab :lol:
a v30 weights 4.7 kg
so 1.66 kg for a few extra bucks is a really nice choice
and v30's are chinese now
century vintage are still made in england
g12t75's have great tone, but no presence
they're too scooped when used alone
nice for bedroom playing and even pro recordings (nevermore uses them), but not in a band, specially if there is another guitarrist with middier speakers