speakers that match well with denon

Maybe Energy's Veritas V2.2 (with a dome midrange that will have better claity) but will need some power to sound good.
I used to run them with the AVR-4800 but are now bi-amped by two Denon's POA-5200 with are crossovered by a Mirage LFX-3 into two BPS-150i subs in stereo. Now I think they sound great. Still using the 4800 to power the rears (Energy Connoisseur C-6).
Hope this helps.
Rich

Actually what Denon reciever do you have. 5 years ago , before upgrading to seperates I had a 3200. My friend now has a 3203 or I think its a 3803, but its basically my reciever 5 years later. Amazing improvement. Efficieny is important, but I was impressed how well the Paradigm towers sounded on his Denon. I also used to have NHT super Ones. They also need alot of power.

Polk Rti's are at the right price-preferably with 2 midrange woofers like bookshelf 55 or floor 800.

How about PSB or Sonus Concerto? JBL?

You might want to try Monitor Audio's line, they have matched up well w/ the Denon.