Hello all.  I just ordered a 12" RLP and I am going to be running it off an MTX 2300.  The sub will get approximately 700 watts rms.  I am debating about what enclosure I would like to use in my car.  I currently am running 2 JL Audio 12w6v2's in a sealed enclosure and it sounds good, but I am looking for a little bit different sound.  I would like it to have the potential for getting loud, but with precise sounding bass.  Would I be better off going with a sealed enclosure again, or should I try a ported enclosure?  Also, as far as vented/ported, does slot ports or round ones matter?