hello im new here and to HT so i have my first question and its prolly one you all have heard and answered a billion times before but here goes anyways. i recieved my harman kardon avr 630 a couple weeks ago and have read all the info in the booklet quite a few times about its setup and features so im not in the dark there. im kinda dumbfounded on what JBL speakers to buy for the system, my main use will be for movies but i also want to be able to crank my music. i have decided that my front mains are going to be 2 JBL E80s because i can get them fairly cheap. and for the center a ec35 that im waiting to be delivered as i type. im stuck on whether i should go with e10s 20s or 30s for the surrounds, 50s are out on account i cant afford em. i plan on buying one of these svs subs everyone on here is saying good things about. my room size is 12x20 with 9 foot cielings. and i want my system in 7.1. thanks in advance for any replys.