Just want to put in another vote for the RELs. Probably a Stadium 3 used or Storm 3 new. With your equipment and budget I can't think of anything close. They are very adaptable and man are they fast. I am reticent to say don't look any further, because then you never learn about new things. I would say that you really should listen to both of these before buying a sub. You'll figure it out yourself. Happy listening
Todd
Todd