I just had one NIB yet. And that was enough for me. It was a Ghostbuster Pro. I had 2 major issues. Right out of the box the power supply blew up. It was set to 115Volt instead of 230Volt. Its funny because there was even a big sticker wich said 230Volt on it. However the little switch on the side was set to 115Volt. After finally getting the game delivered wich has been delayed twice i was unable to play it for one week... Waiting for the new power supply...
Second issue occurred shortly after i got the new power supply. Thank god the game finally worked after i got the replacement power supply... First signs of ghosting started to appear just one day after the "first" game. Only Storage Facility and Super Jackpot were ghosting. But the following day those and even more inserts were starting to ghost. Even the Shoot Again insert was affected in the end. Stern confirmed a replacement playfield. Wich i have been waiting 15 weeks for...
Since then i had no more issues with this game. It has been around a year since the playfield swap and around 2000 games. Hopefully it will never break again. I like Ghostbuster btw...