I am searching on the Internet to find out the most powerful flashlight with highest lumens EVER!!!!!!!!
Polarion claims World's most powerful Flashlight with 5,000 lumen
I can see that you have got bitten by the bug really nicely.
Lights from Polarion are not for everyone. If you have a family/house/car/kids/support parents/other hobbies/saving up for retirement, I don't see how anyone earning below 10k/mth would wanna buy this range.
How about a Lightpipe HID, 250W HID, 30 min run time on Li-ion, 6" reflector, usd 425. Some guys are already sampling the 70W version.
Just a warning that I don't see often enough :
Oh yes, btw, a high-powered nicely collimated HID can blind you as fast and as well as a 10mW 532nm for close ranges. Most have quite a bit of UV-A even after filtering by the glass (you can hold up your transition glasses in front of them, most darken really fast), the hotspot from a 6" reflector 55W at 3m has about 4 stops (that's 16 times) higher intensity than the noon sun and I am in the tropics. With the hotspot being larger, it is easier to hit someone's eyes with this, the only good thing is it diverges much faster than even a 445nm. This is a nice hobby, but treat them with respect. Just don't point these stuff at anyone's face within 10m especially in the dark where the pupils dilate.
This is 1.5m for the 6" 55W HID focused for throw, the 1.6W (LPMed with the glass lens on, ie not RAW) 445nm defocused to 1 inch length for the beam. The HID spot really has a larger corona but it can't be seen here. Laser goggles were used.