hello, I am finally going to upgrade my 10 year old prologic system...

I have only been seriously looking for a couple weeks, but have a couple ideas and would like any advice you guys could give.

my fav. speakers thus far:
Focal JMlab Chorus 716 S fronts
Focal JMlab Chorus CC 700 S center
Focal JMlab Chorus 706 S rears
I have compared to boston, definitive technology, bose (and everything at circuit city / best buy that didn't sound good)

the place that has the JMlab's suggested a Velodyne sub (either DLS-4000R or DLS-5000R). I listened to the system with the 12" sub (DLS-4000R), and it seemed to blend well with JMlab

the only thing... the JMlab speakers were running off a rather nice preamp and amp where as I am looking at recievers around (or less than) $1000... Will there be a noticible difference on the JMlab speakers running off a reciever?

recievers which have been suggested were:
Denon AVR2805, Denon AVR3805, NAD T 743, NAD T 753 (763, and 773 which I think is a little higher price than what I want)

placement of this system will be in a finished basement... Tile floors, 7' suspended ceiling, movie listening area ~ 15' x 20' (entire room ~ 15' x 60')

Not the main function of this system, but I also play music which will need to cover the entire room (~15' x 60') as the pool table is on the far side... (background music mostly)

If there are any other speakers you guys think I should compare, please let me know...
also, please comment on the recievers I have listed, and again, any suggestions would be appreciated

Thanks,
Mike