I got my Quark Mini 123 and Preon today after a long time of waiting. They were both well worth the wait! 4Sevens is putting out some serious flashlights with the newest tech at unbelievable prices. I got the Quark AAx2 when it came out (XP-E, but I don't really care it's bright enough for me) and the Quark Mini and Preon just add to the quality and inginuity that I noticed in the orginial Quark.
The Quark Mini 123 in unbelievably small! I knew it was going to be small, but it is ridiculous how tiny this thing is. The modes are perfectly spaced and I thought I wouldn't like the UI (3 preset modes without memory), but I guess it just takes the right brightness levels to appreciate a simple UI.
The Preon is very nice to hold and fits well in the front left pocket (knife is in the front right and bigger light in the back right next to the wallet). The brightness levels are also great on this guy and the high is incredibly bright for a 2xAAA light. The button is great (aluminum model) and it is very easy to get to high right away (click press, soft press, soft press). The anodizing on this light is very unique and exudes quality. I do not think I have ever seen a piece of aluminum with better anodizing than my Preon. The price is amazingly low for 2 bodies and the option of clicky or twisty.
If you are in the market for a new light with a cutting edge emitter, Quark has it.