Are these good subs?? I know a little bit about them, but never heard the subs before. They are 300w rms and 600w peak. I am looking for (3) dual 4's of these subs and wondering if these subs are pretty good?? Looks as if they have a thick rubber surround and have a lot of excursion. My shop has them for $99.99/each. Will these subs get loud with about 800w rms to the 3 of them at 2.67 ohms?? Thanks.