i wouldn't recommend you use canary unless you specifically need something from it. the closer to the source you go, the less testing it received so you can be in a broken state. i'm using the dev version and every once in a while it'll update and a webpage doesn't load properly anymore or random things break here or there.
for the most cutting edge, you can get the chromium builds, which google takes, adds google specific stuff and create canary, which after some testing, gets put into dev, and after some testing, goes to stable.