I have always had a Grado, but at times I may just have a 60i or a 225i.
Just like having that Grado sound around, but I will admit that for the most part, the Grado sound stays intact through pretty much the whole series of cans.
For this reason it makes me want to explore other style headphones. I do wish Grado would experiment with a closed headphone, that would peak my interest.
I actually prefer the older school Grados, love the RS1 semi-vintage they sound awesome , but they bring so many other advantages for me....I am not a fan of the newer thick cables, nor the small headphone plug, for myself, if I pay $600 for a headphone, I am going to do most of my listening from my home set-up...so why can't I at least have the option of the jack that I want and the cable that I prefer. I never think it is a good idea to have the cable weigh more than the headphone itself .
Grados have a great sounding cable on the older models, and they can still be a bit quirky, I manage mine just fine, but it is way more of a job than with other headphones that I own....those cables seem to manage there self and you really don't notice they exist, I never find myself fiddling with them.
I don't want to sound like I am bashing, but I probably do...this stuff does not bother most...so this is just a rant of my pet peeves.
All this being said....I love the Grado sound and I think I will always own one....they just perform so darm well with the guitars that I love to hear.