well the guy are the audio store, is comparing apples to oranges. i am a huge jbl fan and the subs does not even come close. personally that g2 will sound great, if you want something very comparable to the boston, then the parent company of jbl is infinity. infinity kapppa perfect vq. they are probably in the same leaque, if not, sound better than those g2's, plus they are the top of the line infinity's. that boston is a great sub, but the g5's would be the way to go, and the infinity's are comparable to the boston g5's. if the shop is a jbl dealer, then he might be a infinity dealer also (both the same company) i heard the perfects before and they just hit every note. im just throwing some options out there because some people are fixed into certain subs and there are atleast a couple of different subs to choose from. anyway good luck.