Kicker's quality has gone down in the years, they are not what they used to be, alot of shops have dropped them because of quality issues. Alpine hits pretty hard and has good quality, as like anything from alpine. So I would go with alpine.

Although like previously stated JL Audio is the best. You could pick up a 10W0 or 12W0 for around 100 bucks on ebay or 119-129 at a shop.

Look into it, they are great efficient subs, and come with factory 2 year warranty....You can beat these subs to the extent and they will last!

Jason


Jason 00 Audi S4, 2.7 Bi-turbo quattro 01 S10 Xtreme, 4.3l 98' Contour SE with some mods 96 Cavalier (beater)