Since I just did an aviation post, I might as well keep the good times rolling.  More than anything, this post is a reminder for me: Quiet Technologies' Halo headset has gotten rave reviews from any private pilot trying them on.  They offer passive noise reduction vis-a-vis in-ear monitors, rather than the alternative, which is a giant bulky headset which usually runs 1.5-3x the cost of the Halo.

At the price, it might not be beatable, and the fact that they're likely a ton more comfortable than can-style, they'll likely be the product for me, at some point in the future.  Extra bonus, you can keep your hat on while wearing them.  In Phoenix, that alone is worth the price.