[Poseidon]

It all depends on what type of music you listen to. If your into dance/trance 2x10" subs would be good, general music (bit of everything then a 12" sub would be a good compromise, Slower basier music such as rap and R&B then a 15" would be suitable.

You a decent kit for the amount of money you can spend.

My friend has 2 of these [url=http://www.caraudiodirect.co.uk/product_info.php?products_id=4770:c9179]Subs[/url:c9179]

Sounds great, although sounded great before he bought the second.