here is a link to rod nh 's paint code list. he did an excellent job on this.
as far as what is the best paint out there, its like tool brands, tractor brands, taste in wimmens ect. use a good quality automotive paint. you can either use a single stage urethane, or a base coat/clear coat system. at mybody shop we use diamont base clear. napa's cross fire line of single stage is a very good paint at a decent price. ppg makes a good product also. preparation is 90 percent of a quality and long lasting paint job. best advise i can give you , what ever paint line you choose, stick with all the products in their line, at least until you gain experience and know whose stuff is compatible with whose. by using primers, reducers, hardners, prep products from the same line, it is all desined to work together, that way if you have a problem, its a lot easier to figure out what went wrong, and how to correct it.