My X3700H hopefully will arrive next week. Need some advice with a dual subwoofer setup. I know that it's best to use the same subs but someone told me it's fine using mismatched subs ( different brands\/different RMS ) coz the X3700H has dual independent sub outs. Plus any problems that the mismatched subs present can easily be corrected with the Audyssey app. Is this true or better stick to the same brand\/make and model? I currently have the SVS PB1000 but unfortunately can't get another one coz there just aren't any stocks available in my country at the moment due to supply shortage. I was told earliest it'll be available might be sometime April\/May. The Polk HTS12\/HTS10 is available but they don't have the power rating.