Eight Ball all day long!
The game is hard for sure, but as long as you focus on hitting the 8 ball target as early as possible, you will light the kickback ball save on the big left outlane. That alone makes the game much more manageable. If you use the kicker, you can re-light it again.
The machine forces you to play the entire playfield to collect the balls and is super fast for a classic Bally. Nice looking game too and the chimes give it some great charm... especially when you rip the lit spinner (also lit via the 8ball target)
I've owned Eight Ball deluxe 3 times and have sold them all. IMO, all that game has going for it is speech. The object targets are all grouped together and you can basically make them by accident. Stern Nine Ball has a similar setup with a bank of targets for each ball, but at least it forces you to shoot them in order which makes for a great sharpshooting game with more strategy and shot angles.
I've owned almost all of the top classic Bally pins and only Eight Ball and Fathom were keepers for me.
Good luck with whatever you choose.