I'm working a lot in a datacenter and it's pretty noisy. I would use my QC 35 II however no wireless devices are allowed in. So I'm wanting to use my old iPod classic as well as some wired headphones. Any recommendations? I don't really want a second Bose pair so I'm looking at the Sennheiser PXC 480at the moment as I've always like the Sennheiser sound. They must be comfortable for wearing for longer hours.