many of the top end american made production lights are designed for a specific work or task as simple hand tools.
many of the "made in china" higher end brands seem to be specific for the enthusiast market.
all of the high end china made brands seem to come from the same few factories, so i dont see any difference between their qualities.
but i also view quality from its design, and not merely about how thick or how well the parts were machined.
ive taken apart surefires, and other brands of lights, and there is an apparent difference. there are a lot of little design qualities that surefire adds because they do not aim to build the smallest light possible, thus being able to add features making it more robust. in contrast, of many china made higher-end brands usually design for a more compact size sacrificing robustness. but even when compactness is not a concern, features about protecting the critical components are usually absent.
reppans mentioned finding brands that stand behind their product with a longer warranty and good customer service is the biggest reason i have given up on most "made in china brands". there are still a few that I would consider buying from, and that is based strictly on their customer service reputation.
another problem i have is parts replacement when something does go wrong. the switch being an example, how difficult it was be to find a new switch? if i cant obtain a replacement switch, would i then have to replace the entire light?
fortunately for me, i like my lights with a simple interface, and i dont need more than 200 lumens. although, i do understand the want for more lumens
i dont feel compromising runtimes, and thermal safety is worth it. and i also understand users that dont want to use lithiums, and stay with common batteries such as AA and AAA. i live in a country where using lithiums is neither a hassle, nor overly expensive.