I just change my RSP-1066 for an Anthem AVM20. I want a 2 channel amp to power my Paradigm Studio-100. My dealer is offering me the 4B SST (2x300W) or the Rotel RB-1090 (2x380) for the same price (around 1500$ US... part of the deal with other gears...). Surprinsingly, I like the sound of both. So I'm torn apart here. Any opinion here please? Thank you.