I have a Denon 3803 , upgrading soon to a 3806. Eventually will be buying Aragon Amps and using the 3806 as a processor. I have MT80's for Fronts, VP150 for Centre, Surrond rears are QS8's and Surround backs are QS8's.
Now I need a sub. My final room dimensions for the theatre room are 16 x 23 x 8.6. I am debating between two Paradigm Seismic 10's or Sunfire's and now two VP500. Problem is the VP 500 is big plus I have actually here the Paradigm's and are really impressed. And although I have not here the Sunfire's I have read alot of reviews and I am thinking of also putting a Sunfire Junior in the rear of the room. I know that sub freq's are umni directional , but sorry I can tell if the bass is in a certain area. there for two upfront and I want boom in the rear when it is required in the rear also hence the third, but a small one. Who has a VP500 and where would it stack up to these other two subs

Pioneer sc-1525
M80 HG Cherry