don't own a machine yet (so i didn't cast a vote) but Stern Brought 3 tables "Fresh off the factory floor" to Comic-Con san diego. I played on all 3 quite a bit and here was my impression of the playfield conditions:
Pabst Blue Ribbon: Neat game. Playfield was perfect. The angle on it is super low so you would notice any little imperfection if it had any. The ball feels like its moving at a snails pace compared to other modern games. smooth as silk.
Ghostbusters Pro: So far as I could tell the playfield was perfect. Though I will note that something felt 'weird' with the way the ball was acting on the field. The ball would often be traveling very fast, then rebound off a post, or deadflip off a flipper, and the ball would come to a complete stop or nearly so 3-4 inches from the rebound. like it was getting a wicked back spin, and suddenly getting traction on it. It was happening so often that people were complaining about the 'Magnets' under the playfield messing up the game. (which, we all know, there are no magnets under the pro) I wonder if this was just a 'squeeky' new playfield coat behavior that will fade in time? In any event, there were zero noticable problems with inserts or any other playfield imperfections.
Spiderman: The new spiderman was a ton of fun, and was a great contrast in difficulty to Ghostbusters (Spidey is far more forgiving) But those inserts.... man. they were a mess. This is a brand new machine and I could visibly see the lumpy bumpy texture of the inserts rising up. The balls path was constantly being effected by them. In every other respect the game was beautiful and played amazing. but if i had bought that machine brand new I would be removing/re-installing those inserts the first free weekend I had time to do so. It would have been a bigger issue on a less forgiving machine, but it is still a problem.
I'm going to be ordering a Ghostbusters pro at the end of the month. I'll check back in with this thread and cast a vote when it arrives. I like that this thread was started with the spirit of proactive feedback and not internet rage. There's some people on this forum who complain so much about trivial things I have to hold myself back from replying: "Well if STERN's product is so poor why don't you buy from a better pinball company?" then the inevitable followup: "oh... right..."
Respect STERN. they are LITERALLY the only reason we get new pinball at all.