people have mixed reveiws about the solobarics, i personally think they are a desent sub, not good SQ but yea, they'll get pretty loud, I'm actually selling 2 of em if your interested...12" L5's dual 2ohm...
The compvr's are great subs as well, most people will tell you to go with the CompVR's so i'm gonna be the devils advocate here and say, go for the solobaric, you can always sell it...take a risk, whats the fun of life without chance...