Kitchen cabinet door material ??

The longest height of our kitchen cabinet is 92 inch(ref panel). I decided to use plywood. Our carpenter called me that material must be MDF becuase plywood might worp. Is that true? which material is the best for kitchen cabinet? I think MDF looks bit cheaper, solid wood is over my budget. So plywood was the best choice for me. Please let me share with your thoughts/experiences!!!

Thanks

By momo |