Yep - stay clear away from Pincab on re-decal'd cabinets. I was luck that I removed the legs and Pincabs and let the cabinet sit for a couple of weeks. The marks mostly disappeared, but man I was pissed.
In short:
Pincabs - covers damage and leg crinkle. Adds a color accent if that's your thing. I'm using them on my BSD, but that's it.
Foam - Nice idea, but has shortcomings. I put the Stealth leg protectors on some of my pins. When it's time to remove the legs the adhesive can stick bad to the cabinet. Enough so that you'll be biting your lip for fear of damage.
Felt - My preference. Use the thick kind like Pinball Life sells. Felt at Walmart and craft stores is likely not thick enough, and for the money the Pinball Life sets are cheap and effective. And they hide pretty well behind the leg. They're thick enough that the leg doesn't actually touch the cabinet.
Regards,
Brian