Best formula brand?

Arin • Hadley Noelle 12/12/20💗married 7/15/20💍 Angel baby 8/9/18👼

My 6 week old is currently on both formula and breast milk since I can't keep my supply up, I'll probably eventually have to switch to just formula but trying to hold out as long as possible. I've been using Similac(what the hospital gave us) but I'm wondering if there's a better brand. My baby is also very gassy. What formula works best for your little one?