And even here we cannot agree. While I have a DR Photon on my keys, it is not my goto EDC light (too small). That happens to be a Steamlight Protac 1L (single CR123). Could be better, but is the best compromise of size and light output. High and lo output (180/12 lumens) and strobe (blah), with tail click.

General use is almost always a headlamp, backed up with my EDC for throw as necessary.

Regards,
Bill