MI gardener would be a very good source ,they make cool youtube videos but i personnaly never ordered from them.I started gardening not long ago and i saved my own tomatoe,lettuce,herbs seeds etc.This year i sent an envelope to Ray from the youtube gardening channel Praxxus55712 https://www.youtube.com/channel/UC6YgvyGnc7HBvBEVAeDnsiw he does a seeds giveaway every year.I also got a catalogue from https://www.seedsavers.org/ I havent ordered yet but they got plenty of variety.
I like Mi Gardener because they are local- I'm in Michigan and I like to try and keeps things local. BUt I do go off to other sites as well.
That's awesome! I want to start saving seeds as well, once I find some good stock to go with!