My grand prix is getting bought today and the guy offered me 600 for my 2 MA Audio's and hifonics 1206d amp which is an awesome deal. So I will need new subs for my jeep cherokee now. Getting a ss trx2000 amp for cheap and will have about 350 to spend on subs. 12's or 15's should I go for? and which ones? I want something that sounds way better than my ma audio's, hits low and is still loud. Any info would help a lot because I want to get these soon.