I've been playing a Wonka standard fairly often at a location and just got my LE for home yesterday. Too soon to tell for me. DI is pretty polished with code and the modes, really only one super hard shot (sim card) and the only "cheap drain" sometimes comes from the theater. They changed some code for the QED dude to interfere with that, so it's not too often that it happens anymore. If you are a nudger type of player, you can probably get away with hardly any cheap drains. For Wonka they've added more modes and multi-balls in more recent updates, still needs some polish, but is fun to play. There is some drainage action that some might consider great to make the game harder. However, if I hit a clean shot in one direction and it returns with a SDTM or left out lane drain, I'm more frustrated as a mediocre player. I WILL add the left out lane post to keep the fun factor higher for us at home. Coming out of the pops is dangerous for a possible drain. It's all part of the game I guess.
Wonka seems to have more parrallel things accumulating for modes and accomplishments, while DI has phone modes, Bob modes, and mini Theater modes that are random, but one at a time in each with some reward modes as you progress. They both shoot smooth with no real "clunky" shots.
Like I said, it's too early on Wonka (in the honeymoon stage) to give a conclusive opinion from me. I have to tweak some things, play for a while, learn the rules and progressions better, etc. Not an answer for you guys yet, but some initial thoughts since no one else replied for you.