I liked my Black Diamond Revo enough to buy another. Uses rechargeable or regular batteries. Comes with rechargeable. I like it because If needed I can plug it in to my Anker power bank and recharge it with a small cord that plugs into USB.
I have the BD Revolt too, and it's a good light. I like the Nitcore better (it's a rechargeable like the Revolt), but as you mention, the Revolt can use rechargeable or regular AAA batteries, which can be handy at times.
However, the Nitcore is smaller, 1.5 oz's lighter, equally bright, has the most positive "on-off lock" of any headlamp I've had, and also can be charged in the field with a power bank and USB cord.
