if you are just going for a package deal then its fine. (nitecore flashlight + nitecore battery) If buying batteries alone, get a good one.Lord Tin Foilhat how are Nitecore batteries? I know you linked MTN above but Nitecore sells full flashlights and charging bricks and I'm not looking for a DIY thing. Just let me buy good batteries and good flashlight.
If you want the best quality batteries, get one of the ones from MTN. MOST batteries are alright, but you get what you pay for when it comes to batteries.
Metal Nitecore flashlights are decent. I wouldn't tell someone it's junk, its a good budget flashlight brand that for most people, will be just fine and dandy with.