kinda depends on your system's size...and your budget. you can get the lil 10 inch vel,with servo contrl, for $599 most places. i have a mirage dual 10 tht was close to a bargain so i went with that. it also has servo and it's prettier..piano gloss w/ outboard xovr (which i retired when i got the 950). the HSU is raved about everywhere..but haven't got one. i have something similar to a HSU in my van. it rocks. M & K make some really really good stuff...how much $ do you want to spend? what are your mains & how big is the room?