Depends on what you like. It's like asking what the best kind of BBQ is. There's white chowder, red chowder, chowder with milk, chowder with cream, chowder with broth, etc.

The Great Chowder Cook Off in Newport, RI on June 2

http://www.newportwaterfrontevents.c...wder-cook-off/

is a great place to go and try dozens of chowders of all types, some are excellent, some taste like they came from a can.