The JBL ES20 and 30 are on sale now. I can get a pair of JBL ES20 for $129 or ES30 for $199. I'm going toward 11.1 or maybe 11.2 setup. My current set up is 5.1 with Yamaha Soavo-1 for front, Yamaha NS-C444 for center, and Yamaha NS-333 for Surround. I wanted to get the NS-333 to complete my 11.1 but they are still $249 a pair when a pair of JBL ES20 can be get for $129. Will this set up with JBL ES20 or 30 affects my overall sound? Is the JBL ES20 is any good? Thank you...