This is where I feel like I separate myself from the rest of the Basshead Club here. Many of them swear up and down by the Sony XB line which to my understanding has bass quantity, but not so much quality; and thus the mids and highs suffer greatly, which to me isn't good enough for my basshead needs. I'm stuck in a bit of a middle ground, where I'm a basshead, but I NEED the rest of the spectrum to be smoothed out and not so coloured. At the same time, I require extension, quality, and quantity (but not over powering) bass in my headphones. The term for this? Bassphile? Subaudiophile? I don't know. I just know I'm a basshead that doesn't want any shenanigans along the freq response, except for a nice, quality boost in bass.
This is where my modded M-100s fit in; despite the slightly LESS recesed mids, it's still not as recessed as stock. Also where I believe the Z1/200s come in. I'm almost certain the Z200s are for me, but I might end up getting both, just for S&G.