Of course this turned into a shit show but I'll give my opinion
Both are great boxes and both are made by quality people who stand by their work.
There is no one I know of who can honestly say either guy did them wrong or didn't stand by the product.
There is no one who can say they don't sound good, sure you might have a preference but you can't honestly say that one sounds bad
The biggest pro for me is cost, tinybox was much more affordable for me but that doesn't take anything away from nbox.
The biggest pro box vs box for me is battery life, the nbox plat wins here but that doesn't take anything away from tinybox
Bottom line is you have to see what works best for you as a whole and neither option is going to be something you regret from a build quality, sound quality, or support.