I've decided to redo our kitchen. (well, I had help making the decision

My initial thought was to use 3/4" plywood, but after looking at a number of
recently re-done kitchens, I notice they are all 5/8" melemine.
Is there a concensus on what cabinets should be made of ?
Plywood or Melemine ? 5/8" or 3/4" ?

Thanks in advance

Matt