Probably Wilder's. It's interesting how Depp's version tells the story from Wonka's point of view versus Charlie's in the original, and I like all the psychological elements. The character himself though is just uncomfortable to watch, the way he says "Ewww" and his pasty character design and the way his humor ranges from "so bad it's good" to cringy. Wilder's Wonka, he didn't have the characterization to watch develop but he's what I think of when I think of "Wonka-ness". Whimsical and capturing that childlike wonder, but also savage. Ironically, most of the other characters I like better in the Depp version(Augustus, Violet, Mike, the Grandpa-although Charlie and Veruca, their 1971 counterparts have way more personality). I've never read the book, so I can't comment on that.