So the question is in the title
For quality and sheer bang for you buck I think they are really great; they also include some really interesting/cool complications yet nobody ever really talks about them or they are rarely featured in online reviews/news etc.
I am biased though; owning 2x of their timepieces (legend and Magneto). For myself I like niche/interesting/offbeat watches which initially drew me to Ball; but owning them for a few years now I still cant understand why its only watch aficionados that really know about them.
Probably down to publicity? Small company with a small budget for advertising? Maybe they are just too humble... Anyone have another opinion?