DYI Stand - which plywood?

[Easto]

I have the frame of the stand done and ready to go.

I was thinking of using 3/4" plywood for the top sheet and if I have enough of it left over use it for the front. The rest I would like to use 1/2" depending on price.

My wife wants to paint the stand out white.

Which type of plywood would be best for painting white? What I am looking for is something without grain popping through.