Actually the Brightside paint isn't that much more expensive when you consider what you get in return.

I'm painting using black paint and the Brightside is at least 4 shades darker than the rustoleum and the gloss of Brightside is unreal just rolling it on. I could get away with just doing a light wetsanding with 1500 and skip the polishing it looks that good. I do roll it on pretty smooth though.

The Brightside polyurathane paint now has teflon added in to make it easier to keep clean.

I found a supplier online that sells Brightside paint for $26.00 shipped to the lower 48 states.