I like the modes, having Turbo available at all times, strobes hidden away, Moonlight from off with a long press. The slightly smaller diameter just seems to work for me and my pockets. It’s not much bigger than an AA light and is quite a bit easier to carry compared to the 18350 lights I’ve got. Here’s what I like (in no particular order): I am really liking this light for a handful of reasons, one being that this light is MUCH less than a handful, while having a good number of solid features! I had read about the SC21 and recently pulled the trigger on one.