In my new job, I spend 1/2 to 3/4 of my workday in a huge (20,000+ square foot) raised floor server farm environment. The noise levels are incredible. I'm hoping to find a solution that will provide: maximum noise isolation ability to listen to spoken word podcasts and some music AND be a great solution for high quality listening when in a more normal environment. Ideally, I would like to have these phones be Bluetooth and wired. I may be asking for the impossible. The best solution may be two different products..... If listening to podcasts and music in this loud environment is going to contribute to hearing loss, then I will have to accept the best ear protection without the ability to listen to any audio. I've read many reviews here at Head-Fi and would like folks to weigh-in on the best phones these situations. Will over the ear phones provide more or less isolation? Should I consider phones with noise cancellation? Does anyone else on Head-Fi face similar issues at work? Considering that my hearing is at stake, my budget is flexible. I'm willing to spend up to $1000 - $1200 to solve this issue. Thanks in advance for your suggestions.