I used a big 1 gallon can of Rustoleum flat black oil based paint, no questions asked.
my stepdad was a painter for 30 years and i kinda grew up knowing what to use.
that roll on rustoleum is basically made to stick to a car frame or something like that for 20 years or so without chipping, and if you do your prep right and get rid of any dirt and oil on it, right, it does.
it also bonds to wood very well since wood is a heck of a lot more pourus and will absorb it better than metal.
with that said, you need at least 4 coats, and a lot of sanding and give it plenty of dry time between coats like 36 hours or so.
Im going on 8 years now since ive painted mine and ive had my own accidents like carrying a screwdriver and ramming it right into the side.
i can say first hand that if you decide to use this, it dents, it doesnt chip.
for me anyway, this is the most durable thing i could have used besides formica.
actually the only place anywhere where this thing is chipped or showing wood, is from when i won a decent amount of money and was able to buy a real hybrid makvision arcade monitor,
and i had to shoot nails through my beautiful paint to build a frame to hold the new monitor. trust me though, that 25" Tv i was using just had to go.