Like the M300 V2 I recently reviewed, the H300 is an even more compact 1x18650 headlamp model from Skilhunt - with a surprisingly good number of emitter options to choose from. I opted to go with the Nicha 144ART for Hi CRI (and comparability to other recent reviews I've done). There are plenty of options for you to choose from here - including another Hi CRI choice (I always recommend Hi CRI for headlamps). Here's a teaser for how runtimes compare:
Another great choice to consider, check out my full reviews for more details.