im looking to put in an In Ground pool

have talked to 3 diff contractors and i got 3 Different answers
i have a high water table averages about 6'

1 guy said gunite with some sort of hydrostatic presure
stuff

1 said dont do it just get an above ground

1 said anythin except drop in fiber glass

HELP
i can afford to go gunite
but the one guy said gunite will pop out of the ground