The VSB will resend you replacements if you get less than 80% germination.
Hemp Depot is great if your impatient and he stocks some exclusive breeders like Joey Weed, Reeferman, Cannacopia, TGA and Beanho. VSB is exclusive distributor of two great breeders Wild Rose And Cash Crop Ken.
The only BC Seed King seeds I grew were Purps, i got these in a trade, only one survived out of 5 and it was pathetic in strength.
The other, BC seeds.Com, just doesn't feel right to me. Being in bussiness for so long you would think they'd have some kind of loyal fan base but most haven't heard of them and they make crazy claims of potency.
The best buy in the 4 companies is Wild Rose seeds strains IMHO.