Lacquer is good paint to start out with. My car was a lacquer paint job, but after 20 years or so it started to crack. I think that single stage enamel is better than lacquer, but it is all about what you prefer.
Frank, I'm not sure what you mean by enamel being un retouchable. I assume you mean that you can't blend the color into the panel if you get a small dent, etc. I've touched up my single stage paint jobs with a matchbook stick, can hardly tell it's there if you get up close. Then you can sand it with 1500 and rub it out. Can't tell there was even a chip or scratch.
Now if you have a pretty good dent in it you would have to paint the entire panel as it will not blend like basecoat/clearcoat would. Unless it is a large panel that should not be too much of a hassle. Even with lacquer I would suggest painting the whole panel so it would match correctly. If not you will see a line where you stopped painting on that panel. With basecoat and clearcoat you could blend in your base over you repaired area and then you would still have to clear the whole panel to make it right.