Im sold on JL Audio products, yeah they may be pricey but you pay for what you get.
Their subs have excellent SQ and push out huge SPL if needed.
They play rock music better than anything I have ever heard. Its amazing how they reproduce a fast kick-drum, its like you are in the recording studio with the band.
I would say their "best buy" would be the JL 12" W3 v2, it is well priced and has so much SQ with bass that kicks you hard in the chest and stops instantly.