Since I'm not using my flashlight for anything tactical in nature I like the regular version. For an EDC light to be used as a utility light I have plenty of time to select the output I need.
I usually have the bezel loose so the light comes on in moon mode. Usually when I turn it on it's dark, so it won't disrupt my night adapted eyes. If more light is needed I can quickly tap, tap, etc., to get the desired amount of light. It's plenty bright on high that I usually don't need the max mode. I have the 1x123 Quark running an AW R123.
If I'm out for a walk at night I may tighten the bezel so it's ready to come on at full power if I need to light something up at a distance, etc. I'd also have another light on me set up to come on in a low mode. :P
I've been thinking about putting a tactical tail cap on my Quark just to make it easier to operate, but I like to keep the tail stand option. However I may order a tactical tailcap so I have the option as it would be easy to swap between the regular and tactical cap.
I have pre-ordered a Quark Titanium 2x123 in the regular mode. Can't wait. :)