First of all, thank you for sharing such an informational and quality stuff. Yes, you're right that EBL batteries provides excellent time and on average there battery is 8+ hours. I've gone through the famous brands that you mentioned but there was always a question their quality.
The 18650 battery is a lithium-ion cell classified by its 18mm x 65mm size, which is slightly larger than a AA battery. I've used them in kids toys, alarm-clocks, flashlights, laptops, and high-drain devices due to their superior capacity and discharge rates and each time, I got perfect results. The reason is that they have been manufactured with premium raw materials and high-density cell technology. They will give your devices enough power and last longer, so you can rest assured to use your various devices.
Thanks!