@VoivodeKohoutek love FoundryVTT. been using it for a few years now for many kinds of systems. running the server yourself is just the best.
@VoivodeKohoutek foundry just felt better from the start. roll20 seemed to be run by a bunch of clowns. we had one game on there that being able to dice rolls at all was a crapshoot. seemed to work 1 out of 5 sessions. had to use a discord bot when it didn't work. foundry has been 100% solid regardless of system or strange dice rules.
@retina yeah, left Roll20 a few years back, never felt a single regret.