I just bought an RMB-1066 (5 x 70W) but I am considering stepping up to the 1075 (5 x 120W). At the time I bought the 1066 I was unaware that the 1075 had just had a $200 price drop. I could probably trade up to the 1075 for another $300. For those who have heard both do you think there's a big diference in sound quality? I am powering Paradigm Studio's all around- 60's, 40's and CC.