Seedbay and seedboutique would be my choices for seedbanks if they accepted creditcards.
Attitude seeds are reliable and have got alot to choose from, and yeah they take creditcards.
The Single Seed Centre out of the U.K. They sell from every breeder and there is no minimum to buy. All shipping is a stealth guaranteed delivery. If anyone is interested you can use my 10% off code at checkout. Discount code: DREW