right now, i have a 5.1 surround setup consisting of 4 Energy eXL-16s and an eXL-C. my new receiver has 6.1/7.1 capability, and while i'm not in a huge hurry, those extra binding posts are getting hard to look at. 1. how much benefit do you really get from a 6.1/7.1 setup vs. a 5.1 setup. it seems to me that a matrixed rear channel could potentially break up or weaken directional effects from the disrete rear surrounds. 2. how important do you guys think it is to timbre match back surround/s with the other 5 speakers? considering the fact that the sound is matrixed and not discrete, i was thinking "not very". i know I don't want to buy another set of eXLs, but i was considering something in the way of a set of Take 2s. or maybe i could just look for a cheaper but similar (to my ears anyway) sounding pair of speakers. thanks fellas.