Also depends on what time in the phase you seeded. But that doesn't really answer your question. No matter how many seeds you get, the bud that is left over should be darn near as good as the seedless buds. The trick would be to seed on the lower branches, and have the uppper branches mature regularly. I try to only make enough seeds that I can use within a year or two Max.
I hope that helps.
my two cents,
Eek