I've had good luck with goharddrive.com. They sell through amazon as well, but I believe they ship direct. I usually get the hgst, or now wd, ultrastar hard drives. I've had zero issues.
My parents' isp setup a static dhcp entry per customer. If you change the mac address of your router you don't get an address. The address you get with the proper mac address is constant and can't be changed.
I've had good luck with goharddrive.com. They sell through amazon as well, but I believe they ship direct. I usually get the hgst, or now wd, ultrastar hard drives. I've had zero issues.