Oh happy day! Snake shopping and you don't even know what species you want! You're about to have so much fun. How I envy you! Besides ball pythons, Children's pythons and corn snakes, you've got to consider milk snakes, king snakes, hognose snakes, rosy boas, Kenyan sand boas, African house snakes. And those are just the basics. I'm sure you'll uncover others in your search. And the morphs! Forget about it! So many glorious possibilities and any one of them can be yours.
But I suppose only one of them can be yours, so be thorough in your research and careful how you choose (you don't have to be too careful because they are all awesome in their own ways). I suggest you start reviewing the internet lists of best pet snakes for beginners. You see one that grabs you? Dig deeper into it. Clint's Reptiles has a bunch of videos that you'll find helpful. You can also go on Morph Market and window shop. Go crazy! Have fun! When you have a more concrete idea of what you want, come back and run it by us. I'm sure we'll have more to share.
As to your actual question, I ain't gonna lie, my Children's python is nippy. I've learned to avoid his nips for the most part. I'll also say that his bites are inconsequential. His head is so tiny. It's like being scratched by a thorn. If you want to know what a year in the life of a Children's python keeper is like, check out my thread: https://ball-pythons.net/forums/show...ldren-s-Python. If you make it through, I'm sure you'll see I've had a lot of fun with him despite the occasional nip.