I'm insanely jealous. I own a pair of SE210s that I absolutely love but I can't even begin to imagine what the SE530s sound like in comparison. But the price tag on the SE210s was a bit higher than I was expecting to go at the time and I don't think I could bring myself to part with $500 for earphones.
I do know one thing though...Shure has a satisfied customer here. Its a shame about the PTH though. I've considered buying it since I figured it might be useful since the sound isolation is so good. But doesn't sound so hot to me.