I got the Jet II MK and it's a nice little light. The beam is really nice with minimal artifacts and a nice clean hot spot. Mine did have a small gap between the bezel and the head, i'm not sure if this is a tolerance issue or just a missing O-ring just yet. The anodizing was very nice creating a fit and finish which is super and the provided clip matches very well for a very clean look. Operation wise the twisty does seem to skip a level fairly often, but i've not cleaned the contact services, just using it out of the box right now. The 4 levels provide a nice range, but can require a fair amount of twisting to get to where you want to be as it aways starts on the lowest level. For EDC this would not work for me, but on nightstand its ok. Like hundreds of othe small CR123A lights this one is not anything radically new, but the nice emitter with over 500lm max output, clean beam, a clean well finished housing, stainless-steel bezel, included clip and tripod screw mount makes a very nice package at MSRP of $31. Street prices and sales mean you should be able to get it in the low $20 range where i think it's a bargain.