I have one on my Bally Rolling Stones and really like it. The game play is great. No issues at all. All I did was clean the playfield and install the protector. I do not wax it or anything.

I'd like to get one for my Kiss and Harlem Globetrotters. I wish the were a little more affordable though. They seem kind of expensive for what they are but they are nice.

The one I got for my Bally Rolling Stones fit perfectly and I don't need any tape or anything to hold it on. The gameplay is actually better with the protector in place than it was without it.

I wanted to try one of these for this particular machine because I installed an NOS factory-assembled playfield that I had in the original wooden Bally crate. Brand-new and never used. Plug & play.

The only problem with a playfield like this is that it has a few minor sunken inserts and because it is an NOS assembled playfield, I didn't want to strip it and have it clear coated. It is only original once and the use of these protectors allows you to keep it that way if you want. I can always remove the protector and the playfield will be all-original again. Can't do that if you clear-coat it. Clear-coating is irreversible.

I can always strip the playfield later and clear coat it if I want but for $100 the protector was a nice way to protect this very-rare mint playfield from wear while enabling great gameplay.

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I don't really notice much of a difference as far as the ball gripping although it is obviously more friction than it would have on a bare waxed playfield but less than one with a factory Mylar applied. Kind of in-between.

The coefficient of friction for Mylar is approximately twice that of PETG.

From my experience with the Rolling Stones pictured above the gameplay is excellent.