Pythons are my favorite, but not ball pythons. I love all three for many different reasons but my absolute favorite are medium pythons. (8-12 ft)
Macklots are amazing, as well as carpet pythons. I love long, thinner pythons because they have a bigger appeal to me than larger boas do. I love boas, but they are much more expressive of their power (in my experience) and a bit more difficult to handle (they like to wrap and squeeze more).