I highly recommend the D10. Here’s my Boruit D10 Mod.
I also have a multi-LED cheapo headlamp made by Rayovac. It’s not that bright and has a terrible tint. I then bought a better Rayovac single LED headlamp, but that was still barely adequate. It was much brighter and the tint was also better. But the brightness would constantly step down, even with 3 AAA eneloop batteries, which was really annoying when working on something. I also sanded down the plastic lens to diffuse the beam, but I still didn’t like to use the headlamp.
The D10 is so much better! I also think the driver/firmware is good. It has 5 levels and rarely do I use the high mode since the others are bright enough. And for around $11 with internal USB charging, it’s a bargain.