Well, most of my "restorations" are more like updates or repairs so this comment is no good for genuine restoration work. However, I have found the best paint for the bases are the HAMMER FINISH paints. They can be bought in bulk or pressure pack. "White Knight-Rust Guard" from Bunnings is not bad. Sometimes I also give them a spay of top coat clear over the colour. On the other hand I have tried some of the water based glossy paints and do not recommend them. They're too soft and scratch easily. Lastly, spraying always gives a better finish than brush.