I have JBL E30 attached to Yamaha HTR-5750 as front speakers. I am planning to build up 5.1 system slowly. Can anyone suggest what to get for rear, center channel and sub-woofer. Not planning to spend fortune on this. Average $70-80 a piece max (Total $250-$300 for remaining stuff). Any advice ? Should I go all JBL (for eg. JBL E10 for rear - sells ard $110 for pair) or something better for my price range ? Also, do you think yamaha is a good choice for JBL E30 or vice versa? I am listening to them for a while and I really like the sound. But then I have nothing else to compared to. Anyway has compared this kinda combo with some other receiver/speaker combonations? Whats your comment?