My thoughts are. I dont have a key ring flashlight but I do have a flashlight that I use all the time around the house which would be this one.
This runs an AW at 3 amps on high which would be good for a minute or so before it burnt a hole in something, it is used on low 90% of the time. To me run time is not important on small lights. At the most they may get used for 3 or 4 minutes a day which gives ample run time even if the battery was to last only 15 minutes. There is always another flashlight handy if the use changes.
To some up even if its not used much brightness is everything over run time if you have different modes.