I have this extra 3015 laying about while getting ready to build set ot TL 606's for them. So Thursday I got a wild hair, pulled the Bag 15 and installed the neo... Jeeze it sounds great. I have a pair of the S15's. I've A/B'd them at low volume after the swap - it's tough to tell much difference in the low end but the hi's are a bit more laid back on the 3015s - that and the cab is 15 lbs lighter ... I'll be a bachelor for the week starting tomorrow so I'll be able to take them up to volume and get a sense of how that impacts things. So far I'm psyched and I'll be selling off a Bag 15 or 2 and buying another 3015 if this works out. Anyone else give this a shot ?