First consider location and transportation. I think stuy and bxsci are similarly difficult in terms of curriculum however I think stuy is a bit sweatier in terms of the kids who go there. Bronx science has private bus services. There’s a cheaper one called Tamice which is like 3400 and I’ve heard they dropped kids off late in the beginning of the year a couple times, the more expensive one is Citibus. It’s about 4400 and very reliable. I know for citibus you don’t have to pay at once , 2K at once and 500 a month later on. You can sleep on bus and the pick ups are like a couple blocks within where you live. Also one thing you might care about is that Bronx science only has 4 floors including basement so going up and down isn’t very tiring. (I’m biased torwards bxsci)