Thanks for the suggestions JP and Chris...  
I'm definitely having a hard time deciding between 10s and 12s.  Will I still be able to get tight bass from a 12?  If so, I'd rather go that route.
That amp is priced very low.  Is it still decent quality?  Will getting a better amp not matter much with a cheaper sub anyway?  Blah, I don't know much about this stuff 
 
Also, I don't think I want to build the box for this and I don't want to pay a shop.  I'll look up the sub specs for volume requirements, but what's a good place online to buy a box?
Thanks guys 
