[EZ$]

Ford Racing 65, You have a couple of excellent commercial coatings manufacturers reasonably close to you. Key Resin West, and Arizona Polymer Floors. They sell everything from color chip floors to epoxy mortar floors. The issue with yellowing or chalking is that epoxy does not deal well with UV light. You need to either use an epoxy that has a UV inhibitor, or top coat the system with a two component polyurethane. They're available in pigmented and clear versions, and gloss and satin finishes. The nice thing about satin is that it diffuses the de-glossing the finish will have over time. Any system that has a multi-color finish, (color chip, or multi-color quartz) will have less of a tendency to show scratches, chips, etc.
Polished concrete is an excellent way to go. It's not bulletproof, but you don't have to worry about it deteriorating over time. Also, once the densifier is applied and polished into the concrete, you can apply a guard coat that will protect the floor from spills soaking into the surface. You can also use dye stain in conjunction with the polished system if you want to dress it up.
Anyhow, that's my 2 cents based on 40 years of installing these products.
Rick