I've used certain clear floor coatings on my garage that improved the concretes resistance to oil and made the surface easier to keep clean. I've researched epoxy coatings like the ones from Quickcrete. I've read threads on here from guys putting that product down. I'm curious to hear feedback from folks as to how well the product holds up to wear and use. For example key questions would be: Is the coating vulnerable to burns from welding sparks? If you drill holes through the coating to bolt things to the floor will the epoxy tend to chip away from the new hole? What other issues / priorities have you learned from coatings? Please mention specifically the manufacturer and product if you have feedback.