Both are great games. TZ would be a better choice if you want to tinker with your game. It’s older and going to require more maintenance and fixing, and it also has greater possibilities for mods.
Dialed-In will still require some tweaking and can be modded too but you’d probably spend more time working on a TZ than a DI.
Personally I like the future/retro feel of DI and think it has the best combo shots in all of pinball.