Yuma's good and I like his arc as a character (or more specifically as a duelist since he starts off kinda shit and gets better later) and #39 is my favorite of the protagonist Ace monsters, but Yugi and Yusei are cooler in general.Then shouldn't you like Yuma more than Yusei or Yugi?
I mean he did keep stand by his philosophy to the very end (said philosophy even allows his win against Nasch)