1. Dancing Men
2. Sign of Four
3. Final Problem
4. Empty House
5. Six Napoleons
I like also The Field Bazaar, How Watson Learned the Trick and The Case of the Man Who Was Wanted.
But I think I still prefer Maurice LeBlanc's Arséne Lupin-Gentlemanthief. There was also a detective and his name was Herlock Sholmes...