Never used any of those, I used the 3M Headlight Polishing Kit reviewed in the thread linked below, check out the detailing section for what other people have used.
3M Headlight Kit
3M Headlight Kit
=======================Ouch! I sprayed too much of that product and ended up having to re-restore that one headlight again. I will have to find another user-friendly coating solution.
No, you just need to learn to apply light coats. Just give it 1 or 2 light coats (not too close). When you think it needs one more, STOP and let it set up for 5 minutes, THEN give it another coat. A little practice is all it takes.Ouch! I sprayed too much of that product and ended up having to re-restore that one headlight again. I will have to find another user-friendly coating solution.