I decided to remodel my stereo system and I made the decision to integrate a sub into my setup. For loudspeakers, I go undoubtedly with M22. As for the sub, I hesitate between the EP350 (That I have already possessed), the EP400 or even the EP500. My question is very simple, who would be the best candidate for the music only. I live in a condo with air opened but the lounge strictly speaking made 18x22.

Let's discuss subwoofer, and I know new line of subwoofer amplifier is coming right ?
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Nad C356 DAC & C515
Axiom M3v3
Grant Fidelity RPF-120 MKII
Analysis Plus Black Oval 12&10
JRiver 19