xb90ex looks good in reviews and they are way cheaper than UE500. I will try them out, however where did you found sure headphones in India? I could not find them anywhere online. The ones on ebay, naaptol are imports by people, so no warranty in India. Risky deals. Shures are never official launched in India. (Offtopic: Good you are getting voter id, vote carefully to eliminate all corrupt leaders, otherwise headphones could have been lot cheaper in India.)
Really its very frustrating for all music lovers in India. I will try xb90x once and decide. I am more inclined towards UE600 as I want to try BA once.
PS: I will not be available for a week. I will catch the discussion later