I already have read the manual, but cannot try the app before my subs arrive.
From what I've read, 3 "memory banks" are only for PEQs - on SVS "memory banks" are for all settings: PEQs, crossover, phase, gain...
I do have miniDSP Flex, but it has only two inputs - I use it only for stereo at the moment. For HT I would need one more Flex.
BTW, even room EQ settings that you've mentioned I'll probably use different settings for stereo (connected to stereo preamp): small room for minimum group delay - and for HT (connected to AVR): THX or large room.