The next step up from high power soda can flashlights is massive high lumen lights. You should buy one of these when you need the maximum possible brightness or when you need lots of light for a long time. Some of these high output flashlights are around 2kg (4 lb) and need a shoulder strap if you're carrying them for a long time. The 2 best options for extreme power flashlights are the IMALENT MS18 and IMALENT R90TS.
The MS18 is an incredible 100,000 lumens on turbo with a beam distance of 1350m - close to a mile. If you just want the brightest flashlight possible then pick the MS18: the beam is very floody but there's no other flashlight as bright. It has a built-in fan to keep it cool. This means it can sustain about 25,000 lumens for an hour. As with nearly all modern lights, it has lower modes too, so you can get more run time from them. You might have guessed from the name but the MS18 has 18 XHP70.2 LEDs to give it this amazing output.
If you want lots of lumens but want to see further than the MS18 then the IMALENT R90TS is the option for you. It has a more focused beam that reaches 1750m (well over a mile) but it's still high power brightness at 36,000 lumens. This is because of the 18 CREE XHP35 HI LEDs, which are a good balance of throw and flood.