What type of Airsoft BBS would work better?

I have a UTL L96 Airsoft Rifle with a very slightly busted hopup system. The BBs Curve super high up after like 75 feet (With .12 gram piece of garbage BBs).They are dead accurate everywhere before that.Yes im going to replace the hopup. I was curious though, what kind of BBs would be best for it? It fires at at least 450 FPS, and I was thinking perhaps .25 grams would be good enough to counter the extreme backspin its giving. Second part of this, I also have an Echo 1 E90 A.E.G. that fires at 360 FPS. What type of BBs would be good for it? I would think that .25 gram would work perfectly with it as well. I am aiming more so for range than dead accuracy for the E90, and more for accuracy over range for the AWP since range isn't that much of a factor for it right now.