There's always an AAA light in my pocket and my favourite is my Streamlight Microstream.
If I go out when it's dark I also bring a larger light, lately it's been my SC600W MkIII HI.
My favourite EDC light is currently the Ultratac K18. I sometimes find myself hand in pocket clicking the button like a teenager who has just discovered his mini me!
I guess my favorite EDC will be a Lumintop IYP365 with a Nichia 219B which I have received from you a day before. It fits a shirt pocket depth much better then my other EDC lights. Perfect quality of Lumintop multiplied by the goodness of Nichia...