Quoted from GrimDog:
It’s for a family. I worry about woz’s difficulty as it wasn’t the easiest for me to pickup when I played it and I’m far from a great player. My wife loves the look of woz and the theme and the vote is split down the middle on DI and Woz.
You can always get the pindemption dongle to have different ways for them to play, like timed games with unlimited balls. It is $200 extra, but can be worth it for younger players. I have it, and don't use it much anymore. But, I've had visitors who are unfamiliar with pinball, and it works great for them.