Basically, last December I got this setup. Vr-507 JBL- N26 fronts,N24 rears, N Center Sony-SAWM-40 This DEc. I upgraded my 27" toshiba to a Panny 36" Flat Screen Tau. I am now looking to upgrade my setup a little futher. What is the best possible things I should get? Speakers,Reciever,sub??? I mean i love my vr-507 and was looking at both JBL N38 ($145) and JBL ND 310($200). Give me some input on a sound investment. I mean would i hear a huge difference?