Hi. I am new to the forum. I need your help with these two questions: 1. I have bought a pair of JBL N38II as main speakers and a N Center II as the center speaker from J&R.(I have also ordered Sony WM40 woofer). Now I need two surround speakers and two surround back speakers (the receiver is Pioneer D811S). I am thinking of returning the N Center II and get the NSP1 instead, so I will have 4 N24 as surround and surround back speakers and a N Center as the center speaker. Is this a good set up? also, is there really a difference between N Center II and N Center? 2. If I return N Center II and get a S Center (I heard it is a very good center), will there be a timbre-matching problem? Thank you for your help.