I only watched the '90s one but I thought it was really good. I saw a few episodes of Evolution and it seemed very different from the comics. The '90s X-Men show had an epic feel to it. They killed off a character in the very first episode (albeit one they created just for the show) which gave it a high stakes feel. They did great adaptations of all the classic Claremont X-Men stories. Their Phoenix saga is excellent. They did Proteus, Sauron in the Savage Land, Wolverine's origin, Alpha Flight, X-Factor, Days of Future Past, Bishop, a Spider-man crossover, Mojo and Longshot, the Starjammers, Gambit's origin, Genosha, the Acolytes, the Morlocks, the Hellfire Club, Shadow King, etc.