Closed/openbacks dont make a difference on that front, I'm also running some chunky/thicc glasses myself.

I'm not much of a basshead - more so than sheer volume and quantity of bass I like mine restrained and NOT bleeding into the mids or bloating, so on days I'm craving for bass my XS + bassboost button on my ifi zen dac v2 makes me very happy. The Sundara is a slightly warmer presentation, with bass slightly less tight/controlled IME.