Hey everyone, I have been researching putting together my first HT system. Recently purchased an Onkyo 501 reciever. I have two older JBL front loudspeakers that I will be using as the front L/R. Since I already have the JBL fronts, I decided on going with the JBL Northridge series for the rest of the speakers. Have decided on EC-35 center and 250P 12" sub. I am basically left to decide between two different choices for rear channels, going with either the e10 or e20's. On JBL's website, both are said to be excellent choices for rear channels. The differences are the e10's have a 4" driver and the e20's have a 5" driver. Also, the e20's are really bookshelf speakers where the e10's are designed to be wall mounted and have angled baffles with ports on the sides, guess it's supposed to disperse sound more. I will not be wall mounting so this really doesnt matter to me. The only place I could demo these speakers was Best Buy and I couldn't really hear much of the rears. Does anyone have any input on these rears. I think I am leaning toward the E10s just cause they are a bit cheaper. Any reason why i would want the e20's over the e10's? Should I take anything else into consideration before I buy? Also, I am interested in a rear center as well. How are most of you guys using them, wall mounted?? Put a shelf on the wall?? Any ideas on a good rear center to compliment this set-up? Thanks!!