Hey everyone, I am wanting to buy some high quality headphones for the holidays, but would like them to have some form of noise reduction. From my research, I have found that the Shure SE530's (isolation), and the Sennheiser Pxc450 (cancellation) seem to be the best reviewed. Both are in the same price range, so that isn't a factor. As of now, I am leaning toward the Shure set as I have heard the Sennheisers require a portable amp to function correctly, and I am not even sure where to start as far as purchasing one of those. If the Senns are indeed a better pair of headphones, could you suggest a high quality amp to power them? Thanks in advance for all help!