For a while, based solely on the things I'd read (not any actual experience), I thought Grados were kind of laughably old-school, poor performing, screechy headphones for nostalgic people who didn't know good sound. Then I heard some... And realized just how massively some people's tastes differ from mine. For example, I love and respect Tyll to the ends of the earth (couldn't have a better spokesperson for the hobby IMO), but his dislike of Grado (and treble in general, unless it's on a Sennheiser) subtlely steers potential fans to other brands. JMO, of course.
What steered me away from Grados initially was the impression that Grados are for rock / metal and not much else. Then I found a thread recommending them for organ, and I honestly didn't believe it. But one day, I was listening to Bach using Koss clip ons amped just for fun and I really enjoyed it. I connected it in my mind with the Stratokosster and that thread about Grados for organ, so I decided to try the SRs -- and yep!