Noida property owners - what's your biggest regret?

Amrapali and Supertech stories have me spooked, honestly. I'm looking at projects by Godrej and ATS in Sector 150. Has anyone had bad experiences with them regarding hidden charges at possession? My parents keep saying check RERA compliance thoroughly. Also, kya kisi ko pata hai which builder is better for resale value down the line? Not sure if I should prioritize that, but it's a thought. Any insights?