I keep looking at the Grado Hemp. People seem to love these. The reviews are fantastic on them. The only thing that worries me is the build quality. I've read that a few people have actually had the cups fall off because the wire is so thick and heavy. The ear pads also don't comfortable at all. Apparently replacing the stock ones with the L cups is the way to go. Other than those downsides, they really do look fantastic. I don't think I've read one bad review about about the sound being dissapointing. They are also very easy to drive.
I can't decide between the Hemp, 900 Pro X, and the 660s. I'm not really an EQ person, but I do play around with it sometimes. I mostly listen to neo classical, ambient, and drone music. I will also listen to some electronic (not the bass heavy and EDM
Would the Hemp be a good choice for those genres and worth the extra cost compared to the other 2? I have never tried a pair of Grado's before
IMHO, the Hemps are extraordinarily musical and fun to listen to. They are not the last word on detail however, if that matters to you. As for comfort, you can tune both the comfort and the sound with a multitude of available pad choices, although I believe that most, including myself, agree that they sound best with the skinny little f pads, comfort aside.
That being said, I sold mine because, although I never experienced any issue with them, the fit n’ finish were not up to my personal standards. That’s just me, and there are many, many more than happy owners who would strenuously disagree, but I point it out only because you mentioned it. Take it for what it’s worth.
I’ll probably get kicked off the GFC thread for saying this, but if build quality is a concern, I’d go with Sennheiser - although even there, depending upon your amp, I’d probably steer you away from the 660 and toward the 650/6xx. Again, my personal preferences, not everyone would agree. With the relatively inexpensive CC ring mod, they do almost everything well, and some things great (like the types of music you mention). Plus, in my experience (my 25+ year old 580s are still going strong!), Sennheiser HD’s are virtually bulletproof.
I don’t know the 900 pro X, so no thoughts to offer, one way or the other.
NB: ALL of that is just my opinion - the only way for YOU to know for certain which is best for YOU is hands on (ears on?) experience, with YOUR amp and YOUR music.
Good luck, and enjoy!
IMHO, YMMV, just my $.03, etc.,
ad nauseum.