I am by no means an expert on mods, let alone the DNA200. I hesitantly chose to forgo the 18650 batts and went with the Lavabox DNA200 and so far, am really liking it. I like the way it feels and looks and every tank I have fits and looks good on it. While battery life is a bit shorter then I would prefer with subΩ tanks, not sure it would go all day at 50+ watts, the charge is very fast. Battery packs are available should the original falter, but not something one would change regularly. I don't think I would suggest it as your only mod, but with a back-up mod, it works nicely for me.