I have been saving seeds from plants for a long time,
first thing that I think with your question is that ever notice french seeds VS native american seeds ?
anything out of france is going to fail where I live, they are super fragile plants.
most native american seeds do well where I live,
not that surprising given I live in a harsh place in the USA
but it also gets me looking a bit closer.
people in france are usually very good farmers.
native americans let plants live or die, not good farmers, but likely better plant breeders.
if you coddle your plants, and save the seeds, you plants need that environment you gave them.
so,
looking at this, I ask, what are you really looking for ?