What to do, what to do.. oh God, what to do?

Okay,
Now I have gotten your attention I need honest opinions.
I have two systems in my home; a HT system with a sealed sub (Sunfire HRS-15). I am in the final stages of a Music set up in a separate room, and saving for a sub dedicated to it. Based on great advice given on this forum, I have set my sights on a used Velodyne (DD-10 or DD-12) or a used JL Audio (f110 or f112), depending on what deals I see and can afford.

My question is:
Should I consider getting a ported sub dedicated for the HT and dedicate the Sunfire for music, or having two sealed subs is a good enough investment?