I enjoy Genie I think because it plays nice. it is hard to find one that works well and flippers that are strong and responsive. I don't know if a nib Genie would play as well as the sim though.
slightly off the topic and I don't want to sabotage the thread but I have a old BRONCO sim for the ipad that's plays, looks and sounds like the real deal, but its riddled with bugs and makes it basically unplayable more times than not. would have been a fantastic ap.