I've had these for about a year now, and I've thought they were really great headphones. Punchy, dynamic, all the stuff everyone says basically. Then I tried adding some EQ and new pads, and now I'm fully in love. No reliability issues yet, and I'll be really bummed if that happens because I love these things.
I used Roon to add the Elex Harman AutoEQ convolution filter (seriously, check out the autoEq database. Amazing that it's free). Then just dropped the treble a bit at 5k (I think I'm sensitive to this a bit, and dropping it makes voices sound more like they're coming out of speakers to me) and then gave it just a bit of extra energy in the bass, and an extra "just a bit" in the sub-bass at 40hz. That and some Dekoni Hybrid pads make them lean a bit more "fun", but you still get the technical performance of these drivers with that fun sound. They've largely cured my upgraditis for some time (well, for headphones at least. I did upgrade my amp. I don't have a problem, stop looking at me like that.)
Anyway, spectacular headphones. They have great tone even without eq, and with EQ they just make me super happy. Nice one, Drop and Focal.