Does anyone have any experience with Grado headphones?

I'm looking for a new pair of cans for mixing. Though I have very nice nearfield monitors, the acoustic characteristics of my studio/office force me to fine-tune my mixes with cans on. Since my studio doubles as our office, I can't adjust the acoustics the completely the way it should be.

Currently I'm using a pair of Sennheiser HD495. Today I tested the Sennheiser HD600 and, thanks to the salesperson, I also tried the Grado SR325 and the Grado RS-2. I really liked the Grados!

But until today, I never heard of Grado before. Seems they've been around for some 50 years, located in Brooklyn, New York. Since a lot of US citizens frequent these forums, I thought I might ask around 'bout them here.