The selection of engineered building materials available to contractors and the general public gets bigger and better every year — there’s melamine, plywood, Baltic birch plywood, chipboard, MDO, MDF, particle board, phenolic, and more. One of the relative newcomers, phenolic-faced plywood looks to be a good combination of stability, strength, and water resistance.
Rockler just introduced phenolic-faced 14-ply solid birch 3/4″ plywood. This void-free and stable material features a waterproof and low-friction surface that would be good for tabletops, jigs, or projects. They sell it in sheets of 24″ x 32″ for $40.
Woodcraft also sells phenolic-faced 3/4″ plywood. Their offering consists of birch ply glued together with exterior glue and sandwiched between phenolic-impregnated birch ply. You’ll pay about $60 for a quarter sheet.
Both can be machined with standard woodworking tools and will hold screws well.