Code is never complete on any machine its one of everyone's pet hates but at the moment part of buying a pinball.
TWD LE has acres more extras that look worth it....... maybe sold out but worth a look.
Don't worry about resale value try and buy one that you will keep even then you will probably sell it.
If you want practice to become better at shots I found T3 pretty good to practice on and hone your skills.
Be careful as pinball is an addiction you can't just buy one lol.