I bought a five frame nuc from dadant and used the pieces as patterns to make more. I like the five framers because they give the bees a little more room to get started and when you move them to a hive body it doesn't take very long for them to draw it out. I use deep nucs because I use deeps for brood chambers, but thats just personal preference. After I was done with the patterns I put the dadant nuc together, put a clear finish, handle, hinges and latches on it and use it for my tool box. I tried one of the nucs with a moveable disk entrance but I never really used anything but open. Nucs are pretty easy to make so if you really want to know whats best then make up one of each type your interested in and use them until you develop a preference for one or the other.