Can't stand Star Wars, which is a shame, because pinball needs a good Star Wars pin. We'll keep waiting for that to happen. I would pick Ghostbusters, but only if you're ok with a game that will punish you every time you miss a shot. With the flipper gap, misses are super dangerous.
The code on Star Wars is baaaaaaalls. Needlessly convoluted and a total mismatch for the layout. The layout, however, isn't awful, but it is problematic in many ways.
I would pass on both for now and keep playing other games. Neither game floats to the top of recent releases, though I would easily prefer Ghostbusters. We'll see what the eventual code update does for it as well.