Currently my main is a pair of Beyer T90s, once the pads are broken in I forget I'm wearing them, though the downside being pads will only last about 4-6 years of daily usage, with replacements costing about $40, also had to replace the headband cushion on mine as it was falling apart, hopefully they addressed that with the replacement.
Also really enjoy the DT990s, just got new pads for those, which seem stiffer than I remember but I also don't remember how stiff the pads were originally, so I figure they will break in with time.
Only downside to high end Beyers is they can be a bit treble heavy, personally not an issue for me as I feel the Crack tames the 8-10khz spike the T90s have quite a bit, while really letting the low end shine. But with a lower end amp was definitely fatiguing to listen to for long periods. Reviews say there's a similar treble spike for the T1s, but I don't think it'll be an issue when combined with the Crack.