Those small or medium sized mag lights are very good. My only problem with them is that they tend to heat up if you leave them turned on a while and I use flash lights all the time for my job. But it easily fits in my pocket and would buy another one in a second.
I was at Lowes the other day and noticed they have some newer models in.... Lux-Pro. Purchased the LP600 model (230 lumens) which has 5 settings. Three power settings and two strobe settings. It was priced at $25 and took it to the cash register and they gave a $10 discount. I thought... Cool! Figured it might do the trick for my work stuff as I use flashlights all the time, essentially every job. It seemed to work fine at first and then I noticed it would not turn on or would not adjust settings (with the button). Tightening and loosening the ends help, but still not predictably reliable. So, I wanted to let folks know that perhaps this one is not a great one. It is belt sized. Will continue to use it, but will keep a backup. Haven't made up my mind about it. But it is certainly powerful and cost effective. Not one you would likely choose for EDC due to the size, but its an okay size for my work stuff.