The Heltec MeshPocket. I absolutely love mine. I got 50 days of battery life on it when I did a full-out drain test in my local mesh. Although my local mesh isn't super busy yet, so it may be less in a more active mesh. Still though, it dies so rarely that I don't even have to think about charging it for a long, long time. In fact, I can't remember when the last time I charged it was and it's got like 36% battery left as of right now.

I plan on getting one for my mom for Mother's Day because while she would be less interested in the mesh node part of it would be useful to her and the fact that it's a mesh node would be useful for off-grid communications.