Depends on the sheen you want. Krylon 1613 tends towards the flat side, dries quickly, touches up easily but also scratches very easily.
Rustoluem 7777 (satin) is just a tad bit glossier, goes on easily and blends very well, takes a LONG time to dry but is very chip resistant.
I get the Krylon at Walmart or Hobby Lobby and the Rustoleum at Home Depot.