I've searched and there are a couple of old threads which compare these two but I wanted to be certain regarding what I'm personally looking for.   I'm looking mostly for a strong build quality (the whole point of me looking for a set of full sized headphones is that I'm sick of my in-ears...

I had these for a short time before the protective grille on one broke off. I didn't want to risk continuing with them so I sent them back, but since the product has apparently been discontinued altogether so I can't get them from the same place, and they're more expensive everywhere else.  ...