Who is the master smithing trainer?

In Morrowind you could find grandmaster trainers who could train your skills. My question is who is the most powerful smith in Skyrim? I'm trying to build a master craftsman but I need the training to get to that goal.


Solution 1:

Eorlund Gray-Mane; the blacksmith who owns the Skyforge in Whiterun.

Solution 2:

The second best smithing trainer is in Riften. To use him, however, you must bring him ten fire salts for his miniquest. After that, he will train you.