I'm using Advanced Nutrients. If you're in Canada, like the original poster, you can buy it from Progressive Growth. With their prices it's cheaper to buy than Fox Farm for us :)
http://www.progressive-growth.com/
Good thread. This seems like a good seed bank. I see that 3 people claim to have been ripped off in the poll. I don't see any posts about actually being ripped off though.
Yeah, I would recommend BC Seed King. I ordered BC Great White Shark, White Widow and Kush from them. I live in Ontario and I received the order in two days. I've popped 17 beans so far with 100% germination.