Newtone here.
Longish lead time on the custom stuff, but you can get normal sets from strings direct, they last donkeys, sound great and I've never broken one (save when some roundwound unravelled when I cut the ball end off, I winged about it and they said 'they do that, someone should have told you, we'll send replacements that dont' - I've never broken one in action).
After that GHS are my favourites, but they dont do gauges I need.