I always found Wolverine to be the funniest character in the original animated series. "Pig-faced runt couldn't take a joke." He was always saying something ridiculous in that voice and I love him for it.
But, yeah, the whole thing just worked. Really, really well done revival. I was impressed by how it hit all the right notes. The only real quibble I have is that I wish Magneto looked and sounded less creepy and sinister. The old voice actor had a very regal, resonant voice that sounded more noble than villainous.
But beyond that, I was surprised by how well done it was and how much I enjoyed it. I remember enjoying the show as a kid, but I'm not someone who has this intense nostalgia for it. So I went into it without any real bias or expectations and was blown away.