Don Firth, I'm in 100% agreement.
I've seen a lot of Holmes in my day: Peter Cushing, Christopher Lee, Douglas Wilmer, Ronald Howard (Leslie Howard's son, with Howard Marion Crawford as Watson, and Archie Duncan as Inspector Lestrade).

But Basil Rathbone was a great Holmes, and the undoing of those movies was Nigel Bruce as Watson, and updating them into the 1940's.

However, as a lover of the Doyle stories, I have to say that Jeremy Brett (IMO) was the greatest of all. Complete with Holmesian eccentriciteis, foibles and all.
Plus, the production values on the shows were of the highest caliber.

Seamus