Hey there. I've been reading this sites posts over the years and this is a great site with some great contributors. Here's my situation...I have RTA 11t mains (original owner, well taken care of with no work ever done) and am looking to add e center and surrounds to them. I'm leaning towards vintage or near vintage equipment in an attempt to timbre match the 11T's. from my readings/research, will the cs350ls or the cs400i be good as a center and the fx300i or fx500i for the surrounds. will most likely be using a harman kardon 354 receiver. thanks for any assitence and thanks for all your input into this site. It's great.