Determine your budget for kitchen cabinets. The amount that you have to spend will be a major determining factor in the materials that you have to choose from.
Decide on the basic style of your kitchen. The material you choose should fit the style.
Check online catalogs and custom cabinetry shops to see the different styles and materials available.
Get the advice of an experienced contractor who can tell you the advantages and disadvantages of each material you're considering.
Check the amount of care needed to maintain the appearance of each material you're considering.
Visit local cabinetry shops and home supply warehouses to price cabinets in the materials that you're considering. Get swatches of your choices and bring them home to see them in the light in your kitchen.
Compare prices for your choice of cabinet styles in various materials.
Make your decision based on the best combination of price, durability and appearance.