Hi Philippe,
Grunt's engineer friend is correct about leaving the subwoofer off. I hate to see you give up your EP350, but deep bass and its ability to be bothersome to neighbors is a function of two factors---low-frequency extension (how low the speaker or subwoofer will play) and the output at those frequencies.
The M60v3 speakers have very good bass output, but it does not go as deep as the M80s or a subwoofer. Nor is the M60's output at those frequencies nearly as great as a subwoofer or the M80s. So a pair of M60s might be the solution for you.
Regards,
Alan
