I just checked the OP's posts and he hasn't mentioned the size of the room, unless I missed it, or someone else correctly guessed it in one of the many verbose other posts. The cubic footage is crucial. Also, the shape of the room ( L shape??), whether there are arched ceilings, carpeted vs laminate, etc, is all worth considering.
The OP's current speakers retail for $4000, and he's considering replacing them with $14000 speakers. First of all, I am puzzled why either of his current subs, scraping the bottom of the budget barrel at around $500 each, would be considered a good match for the current speakers, let alone the possible upgrades.
Second, sealed subs generally have a different sound than ported subs, and are considered more musical than the ported designs. As you go up the budget, ported designs get better, but at the $500 level, too many compromises occur. And only 300 watts? Yeah.
The OP's current speakers retail for $4000, and he's considering replacing them with $14000 speakers. First of all, I am puzzled why either of his current subs, scraping the bottom of the budget barrel at around $500 each, would be considered a good match for the current speakers, let alone the possible upgrades.
Second, sealed subs generally have a different sound than ported subs, and are considered more musical than the ported designs. As you go up the budget, ported designs get better, but at the $500 level, too many compromises occur. And only 300 watts? Yeah.