Well these new Sterns haven't really had the chance to stand the test of time, and will you go back to these new Sterns in 15-20 years time? That is the question. You will never lose your money on a mint MB or MM and it is the theme and rulesets on these titles that keeps the player coming back. Having said that AC/DC will retain its value for years to come due to its subject matter. Horses for courses. I think it's nice to have a mixture of the old and the new. Get in quick though, I think MB's are starting to appreciate in market value again. Pinball has cycles and trends and "flavours-of-the-month", but choose wisely...