Well, I've never really had a need or wanted one, but do now. My new job has me on the phone and flipping through job plans/blueprints making notes all the time. I sure would like to have two hands for that! Also, I find myself in DC often enough. You aren't allowed use a phone there while driving without a handsfree device. I'd like a unit with good functionality, one where the person on the other end can't tell I'm using it. I'd also like one that does a good job dealing with noisy places for both me and the recipient. Last, but defiantly not least, battery life. I'll buy two units if I have to, and just let one live on the charger when not in use. Thanks.