I've been disappointed with my Vise system as
1. the second set of resin and compound has just never worked right.
First set was perfect.
2. Most of my molds on the 1 1/4 setup have always been a touch small and have gone in really easy and then had difficulty staying, whereas my Urethane slugs always go in tight and stay forever. (ie one can pound a urethane slug in, a mold cannot be that tight or one will mess up top edge).
3 I've heard I think custom thumb makes a hardening compound that I've seen in thumb grips that I like better.
REst of kit is fine but expensive.
REgards,
Luckylefty