I went through this same issue. I restored a Funhouse and installed a brand new playfield. I opted for a playfield protector as I didn’t want to Mylar the playfield. The playfield protector looked amazing but it did change how it played and I had a few tiny things under it. I could handle those two things but what ultimately made me decide to remove it was the cutout for the left shooter lane switch was causing the trajectory of the ball to change and it would hit the side of the steps ramp. I adjusted the shooter rod but to now avail. I dreaded the thought of removing all the ramps again to remove they playfield protector so I actually used scissors and cut out the playfield protector and threw it any. I’m not trying to bag in the PP but for my particular game, it was creating issues. I was constantly worrying about playfield damage over the next few days and ending up putting Mylar in the high traffic area and was really glad I did. It was real easy to put. Just take your time and watch a few videos. Start with the small Mylar parts (drop) and get a feel for it. You can barely see where I added Mylar to the playfield in Funhouse and I was really glad I did. I wax my machine every 200 plays but even this won’t save you from wear due to scoop ejects and ball drop. For me, Mylar is the way to go. If you have a playfield with raised inserts or paint touchups, the playfield protector is a better choice. For me, i think Mylar is the way to go on new / newer playfields. Older playfield with some damage / insert issues - playfield protectors. Just my opinion as I debated this way too much a few months ago.