crib mattress. please help :)

Holly • Engaged. Dog mom. FTM-to-be. due Dec 22.

FTM here and trying to decide what kind of crib mattress to get. I wanted a fancy breathable one but 300 for just the mattress is definitely not in the budget./:

so, do you prefer the plastic coated mattesses? foam mattress? coil? not sure of ALL thr types but recommendations would be fantastic please. i have no idea what to do :(