After reading some of this thread I knocked out a few games on my Comet with a Hardtop with my son before he went to bed just to enjoy it.
I finished my Comet a few months ago, there are No options on a new playfield that any normal person can find right now. Comets were painted with Crayons and mylar seemed to be the only protection most had. Most have severe planking to the wood anywhere there was no mylar including mine. But it was a game I don't see very often and wanted to restore. I had the cabinet sanded, repaired as the back was falling apart, stenciled. I drove from Georgia to Chicago for a repro backglass because mine had no color. I purchased a overlay before I found out about the Hardtop and quickly sold it on ebay when I received my Hardtop, It was the best option for the restore. It got repro plastics and ramps also. Looks amazing to me and plays just as great.
When I finished my Comet that same day it got packed up and taken to the Atlanta SFGE Southern Fried Gaming Expo. I hung around the game asking people what they thought, I didn't get a single complaint. Everyone thought it played great and looked amazing. I don't know how many times I had to explain it wasn't a New playfield that it was a sheet of plastic basically. I opened it up several times for people to check it out up close also and everyone was positive at least to my face if they thought differently I wouldn't know.
It Won Best Restoration at the Show also.
It's a great option in my opinion. I currently have 10 pins set up at my house, a few with playfield protectors, the Comet Hardtop, several with just orginal PF's and wax, and a freshly restored Totan with a CPR Gold and just wax so all flavors right now at my house and they play almost all the same to me. WAX is the key if you wax your games they will play fast, the weird stuff usually happens from slow bounces when you see the weird spin not from your shots. I don't know how other people play pinball but I usually want to hit my shots by shooting at them not hoping for bounce in's.
I've been on the wait list for a Meteor playfield from CPR for a couple years now and maybe it will be out in the next year, I can wait but who wants to wait years for a playfield to be ready if it's even an option because a lot of titles are not. Not everyone knows who to send a playfield to for restoration and the wait time for that can be a long time also and costly.
I enjoy my Comet with the Hardtop, I think it looks and plays Great.