i've had that set in my SG faded before. with the jazz, it didn't have much low end and wasn't present enough for my tastes. as for the JB, it didn't have enough high end, and wasn't tight enough in the lows, again for my tastes. if you've got the disposeable income, i'd say go ahead and try it, but if you've got a gibson SG, it's likely got either the 490r/t or 490r/498t set. those pickups are definitely worth swapping magnets in before getting new pickups.
edit: you posted when i did, seems like you've got the 490r/t set. i'd say try an a5 in the neck and an a8 in the bridge. with the a5 neck, it becomes very paf-like. it's kinda like a '59, but with more mids and less highs/lows, and a touch more output. a8 in the bridge beefs up the output, with a ton of mids, more low end(which SGs lack in the bridge imo) and more top end bite than the stock a2.