I have been cleaning out my back room over this holiday period in order to and came across my Epic Space Marines, I was given these a few years ago after helping out a friend. I can't claim to have painted the tanks in the pictures above. I'm told that they were painted by Dave Taylor while he was editor of White Dwarf Australia, my friend was working in the GW warehouse at the time so it does give this some credibility.
This is my favorite one from the "pre-painted" vehicles, I'm not game to even try to paint the very small marines let alone paint chevrons, checks and squad markings.
I did have a shot at painting a couple of Rhino's. I think I may stick to the larger variety though, while because quite frankly the predators scare me.