I am in the same group as some of the posters above. I research and research,,,,,,,and then model notes fall out of that research, and then I build models. I rarely buy a kit and then start researching that subject, about the only time that happens is with a prototype aircraft, then I might see the kit, buy it, and then go look for a Ginter book on it or something.
By the time I first bought most of my model kits, I already knew which BuNo on which ship, with the accurate load-out, and all the colors matched to chips.
I only have a very few favorite projects,,,,,,I like all of them so much that I have a "200 way tie for 3rd favorite" thing happening,,,,,,so, I just let my build sheets tell me what is the next model,,,,,if all the fields are filled in, it is ready to go,,,,,,,,so, I just flip through the finished sheets and build what grabs my eye.
The approach seems random,,,,,,but, otherwise I run the risk of having even more Skyhawks, Phantoms and Crusaders,,,,,,and the Cougars and Skyraiders get neglected. And I wouldn't have a Tomcat, Bug or Super-Bug at all, lol.
Rex