The Pro UI is nice but it does need one tweak to make it perfect. First let me explain why. One of the toughest things to find is a light that will work as an EDC and a Tactical light. Being a regular guy with a regular job I do not need the bulk of carrying two specific purpose lights. I need one to fill both rolls. Obviously the most use is as an EDC but being able to use a light in "tactical mode" for that unexpected bump in the night is a high priority even though it is only used occasionally. It's one of those things that when it's needed it is really needed! The Quark Tactical series has been my choice for this because with just a twist I know what is going to happen when I activate the tail switch, but even that is still an extra step and something that must be remembered in a stressful situation. The solution would be to leave the side button as is on the Quark Smart but let the tail switch be set to a permanent mode that can be changed only in the software. If the tail switch always provided instant access to high it would cover the tactical part, the side switch would cover EDC use with instant access to moonlight and then ramping up to the desired level (I use moonlight a lot). It would have the makings of the perfect (almost) EDC light.