
L to R:
Peak LED Eiger; AAA, variable brightness, can take any form of AAA size battery
McGizmo Sapphire; AAA, single mode, all Ti, extraordinary build quality, exquisite beam profile, not very bright, but very useable flood
Velleno Designs Quantum D2; custom lithium battery, variable brightness, orange trit inserts, phenomenal amount of light from a TINY light, short run-times on higher brightness
MBI HF Ti; MBI lithium battery, slickest and most functional UI of any light I have ever owned, 3 brightness modes, all modes extremely useful and well thought out, max is sickeningly bright, plenty of run time on low and mid. I wear this one on a ball chain every day.
In the background: my beloved small CRK 21 Insingo. My faithful companion for over 3 years.