In relation to the SR family, are all the Grado's as tough as each other (in regards to portability). Im thinking about getting some sr225's, thinking that due to its similar design, it'll be just as tough as the sr60's. So am i right? If not, why?

What opamp should i use?

A week or so ago everyone seemed to think to get proper quality out of the HD6X0's/580's hooked up to an ipod you need an amp. Why those three? Why not the HD595's? I'm thinking about getting HD595's for my iriver H320, what do you think about an amp for that?

what does everyone think? im looking for portability and foremost, sound quality. i'm under the impression that the px 200's are the better pair although i dont know the specific's (music style, etc). im into dance and looking for some great basss. if anyone has any other idea's dont hesitate to...