I have both species as well, and honestly I love all of them. They are so different, and are so special in different ways. It's like comparing apples to oranges. My boa is so cool because he's way more perceptive, seemingly takes it all in when he's out, his feeding response is fierce and so cool to watch, and much more interactive. My ball pythons, although they are all different, are so curious, I love how clumsy they are thinking they can climb things they really can't, trying to get into the smallest creases, they are all much easier to hold and "hang out" with. I love them all differently, I don't think I could get bored of any of my reptiles