I'm happy with seedboutique/seedbay. They are quick, carry an excellent variety, and I haven't lost an order yet.
I am relatively satisfied with cannasseur, although be very specific if you bill to a different addy than the ship to. And the strains they carry are exquisite, if not necessarily appropriate for a newbie or cashcropper.
I was loving RushMan for a while but he may be in the penalty box until further notice. Best wishes to him... although the irony is not lost... I hope he and Mota both get through their respective troubles soon.
If you are in Canada, Sacred Seed in Toronto is fabulous. They won't ship to the US however.