Sweet, lots of comparisons here! You've all been very helpful!
daggerlee / XXhalberstramXX: I know what you mean. I've had some headphones that were better for indie than others though. Phones like the A900 (which is said to be quite forgivable) makes them sound better, not by hiding the flaws, but by bringing out the texture and detail of what's there, and of course making it fun to listen to rather than a very flat and boring presentation that some systems can give to stuff that's less than perfect.
Based on these comments, although I've admired them from afar for a while now ("electrifying guitar" sounds very cool), I think I'll hold off on purchasing the SR225s until I get a chance to buy them somewhere that I can return them if I'm not satisfied. I don't think I can let myself start up too much of a collecting obsession just yet, so I'm attacking the various types of cans strategically.
From what I'm hearing though, I wonder if it wouldn't be a good idea to
get a cheaper model (ie. SR60 / 80) just for rock and stick with my A900s for hi-fi stuff? My key concern is, after all, the sound signature and how enjoyable the rock music is made, and everyone's convinced me to get Grado "something" based on that. I've heard the 60s are actually the most "Fun" out of the Grado line, and in the end, that's what I'm looking for. So what do you think? Am I crazy? Or crazy like a fox!?!