I know I want to buy one of them but which one?  I have been torn apart for the past couple of days and cannot decide.  All 3 headphones sound somewhat alike and that's what really troubles me in my decision.  Can you guys offer your input as to which ones I should get?  Thanks a ton!

I am looking to pick up this combination in the following weeks.  Would you guys say this is a good combo or perhaps there is something better for the PS-500s?  Thanks for the input!