The one that's truest to Doyle is the Jeremy Brett BBC version from the 80's - that one is incredibly faithful to the original stories, and wonderfully acted and produced, to boot.

Ahh yes...I was trying to think of his name when I commented about my husband liking Basil Rathbone. I preferred Jeremy Brett.

I've never read any Sherlock Holmes stories so I really don't know what is canon and what's not.