Yeah, I don't understand why / how AP gets such a bad rep. While it definitely isn't great, it's got a great layout and a bunch of stuff going on. I jokingly refer to it as IMLE, as it's Iron Man with a bunch more stuff in it. Now, I think that Iron Man is the better game, which effectively ended my searching for an AP, but AP really isn't bad.
And Rarehero's right - the rules are extremely similar to the really popular games like MB, MM or AFM. Hit a shot a bunch, start a mode. I like the fact that AP makes you win the modes to get credit toward a bigger end mode.
Dr. Evil's hand breaks off in pretty much every AP ever made, but that is more of a design of the toy itself and shouldn't be held against the pinball machine in my opinion. The rest of it is solid.
A13 is cool too, but *if I didn't have an IM already* I'd be keeping an eye out for an AP if I was making that choice.