Well I have heard about the Sennheisers before and read several personal reviews about them being wonderful. I have never heard of those pair of headphones before.
It would be a wonderful experiment if you are willing to get them and try them out for us
Otherwise, I would PROBABLY go with the Sennheisers. I have my doubts about how accuratly a pair of headphones can reproduce surround sound..........................
My personal advise.