Which subwoofer to buy?

Hmmm, I think I would go with the 10 sealed...I mean, with a single small sub and a small amount of power I don't think it's going to make much difference either way. As far as depth goes, with a single entry-level sub recieving only 150watts I would be surprised if the sub could meaningfully reproduce anything below about 50hz regardless of whether it was in a sealed or a ported enclosure. Also I'm thinking that it would be difficult to integrate a port into a fiberglass enclosure that small. As a final thought, a ported enclosure MIGHT sound better BUT the sealed enclosure is guaranteed to at least sound good, there is the possibility the ported enclosure could sound like crap.