Hi! Wow, this is a hard decision!!
I would start by deciding which sport you simply like better, regardless of your skill or teammates. That should give you a place to start!!
Try and go to a volleyball team meeting, tryouts, or try and visit with some of the teammates outside of the practice to get to know the team better!!
This is a really hard descicion, and you're the only one who can really make it. Just be honest with your parents if you decide to play volleyball.
I wish you the best of luck and a great season!! Go team!!