Trying to decide on which single 15 inch sub I want to go with. All three are around the same price range so it's more of which would perform better. It's a future build just getting everything figured out first. I'll have the big 3 done. Custom ported box in a 2012 Vw Passat. The first amp I'll be running is a Zapco ST-2000XM II 2000 watts with a max of 2600. I'll later get a 2nd one and run both amps on it. The subs are the Sundown Z v.5 15", PSI Audio Platform 4 15", or a Deaf Bonce DB-315 15". Still new to the car audio scene not really gonna be competing of any sort just simply want it to be loud so any help is appreciated. Thanks!