I tried 2 different silicone products: GLS-50 from Prochima (used by instructor last year) and Elasil 12H by Angeloni.
With Elasil the pot life is quite long but the set time it's only 60 minutes!
Elasil it's an A+B silicone (1:1 mixture), this can be useful to speed up mixing procedure.
Reading the SDS i found that uncured silicone it's not so dangerous to touch, but
anyway i prefer to use nitrile gloves.
Safety glasses are a must.
GLS-50 use a more conventional catalyzer (20:1 mixture), anyway for small batches is not a big deal.
This silicone has a longer pot time and a waaaaay longer set time: 15 hours!
I tried to be as smooth as possible mixing up the test batches to not include air bubble.
Both products claimed the same hardness (12 Shore A) but in the end Elasil is way
Also Elasil documentation claimed that this silicone is able to autonomously remove air bubble and, as you can see from the photo, GLS-50 actually has a lot more bubbles.