Cool! I love the Grados and only wish that at the time I had the money to get the next step up since the sales guys said that the SR80s are more balanced. They basically create a big batch of them, test out matching pairs and call those the SR80s, then take the ones that are a little less balanced and call those SR60s. The rest get thrown back into the melting pot. But at that moment I was between jobs (we're talking a few days), so the panic of not being able to pay rent set in. It's amazing how $30 can make that kind of a difference in a person's life. Anyway, I gave a pair of SR80s to a friend for his birthday this summer. He is a headphone junkie and raves, raves, raves about them! I'll upgrade one day, but the SR60s are fantastic for now.
So, you didn't tell me what Rotel(s) you are using - maybe you didn't see that part of my post. Since you seem to love them as a brand, I figure it's worth reading up on.
The more you love music, the more you love music.