Oh, man. I enjoy all four movies, right up to and including Indiana Jones and the Kingdom of the Crystal Skull, weaknesses be damned - but I think The (Adventures of) Young Indiana Jones (Chronicles) TV show is absolutely brilliant. It's the most artistically ambitious thing George Lucas has ever done, and in my opinion his greatest creative work since at least the early '80s.
Better than Crystal Skull? Heck, I think Young Indy is better than Indiana Jones and the Temple of Doom, Indiana Jones and the Last Crusade and Indiana Jones and the Kingdom of the Crystal Skull, and I love those. I think the show is better than any of the Indy movies that don't have "Raiders," "Lost" or "Ark" in their titles.