Own TOTAN, MB, and Shadow all great games for different reasons.
Shadow, has the most unique play. Divertors are awesome as there is no other game that has them. 3 flippers and an upper breakout type playfield also gives it a different feel. The ball lock is cool. It is also the cheapest of the ones you listed. Might have a little learning curve for newbies that come over. Only negative is the movie tie in. Depends if that matters to you.
TOTAN is the most gorgeous game ever created. The shots are nicely laid out, so it does have a nice fun factor. The animation dots are great, and the ramps are cool. The biggest drawback is the rule set. Really bad uneven scoring when hitting the lamp, and you can wish away your jewel modes by hitting the bazaar hole. Since there are only 7 jewels to collect, and sometimes you can wish away 2 without playing them, getting to the Wizard mode is too easy. Play for score and don't wish away jewels and it keeps longer.
MB is by far the most approachable for people coming over. Looks great, easy rule set to learn, and awesome toys. Humor and dot animation are very cool. Awesome fun factor. Getting the Wizard modes is not too difficult. If you like MM or AFM, then you will like this one as it is a fan layout. My nephew, brother, and friend's favorite game. We play all the time, and getting the Wizard mode is only a step to the bigger goal of getting Grand Champion initials on the DMD. The price on this one is the highest of the pins you listed. I don't know if that matters to you.
If defeating the Wizard Mode is all you care about MB and TOTAN are not for you. For me, I like getting scores so Wizard Modes don't matter.