I'm using a stealth enclosure that holds a single 10". Mounting depth is 8" and has .75 cu.ft air space and is sealed.I listen to all sorts of music,rock,rap,r&b,metal,etc. I have looked at the following subs...Alpine Type-R 1042D(sounded good),IDQ v.3 (haven't heard) and Re Audio SE-10 (haven't heard).That 's mostly where the problem lies,I don't have any dealers locally that I can actually listen to these subs. I already have a MB Quart Discus 500.1( 250W x 1 @ 4ohms, 500W x 1 @ 2 ohms) that I picked up a few weeks ago for cheap.Would like to keep it under 150.00. Thanks