Hi, im upgrading my stereo system and im planning to purchase the Amplified MTX thunderform subs for a 98f150 xtracab. This particular sub/enclosure/amplifier combo caught my attention because, it doesnt occupy much space, it is pre amplified, and is inconspicous. its selling for 549 dollars on crutchfield. My questions are, has anyone had any experience w/these subs. Do they sound good? Is it worth its price? or am i better of on purchasing some thing else and a a seperate amplifier?

thanx in advance!!!