Wade,
The other “game in town” when it comes to punch-and-die sets are RP Toolz from Hungary.
They have a line-up of Rivet Makers, Hexagonal and regular PDS, plus some other usefull tools.
I use 2 of their PDS for 4 years now and I’m very happy with them.
Another plus of RP Toolz is-they offer spare punches for their sets.
RP Toolz website
http://rptoolz.unas.hu/en/spl/427615/Punch-and-die-sets
HTH,
Cheers,
Angel