Westfield was the first sub service I used, starting in the late 1980s. I was always a fan of their service, but I eventually had to leave for a service that allowed me to order from the entire catalog (Previews or Advance Comics) rather than a narrower selection. At the time, they were limiting themselves to a one-page order sheet and leaving off some of the indie series I gravitated toward. I landed at M&M Comic Service, which I've used for years. For a time, that meant sending floppy disks through the mail to submit my orders, until the Internet came into wider usage.