Ultimate Waterproof WPC Vinyl Plank vs COREtec Calypso Oak WPC Vinyl Plank

Both are 20 mil waterproof WPC planks with painted bevels, so the wear surface is a wash. The Ultimate plank is the heavier build: 12 mm total with a 1 mm IXPE pad and 72-inch boards, which feels more solid and covers a room with fewer seams. COREtec Calypso Oak is the more established name, at 8 mm with attached cork, a 48-inch plank, and approval for both float and direct glue over any level. Owners of both rate them highly; the Ultimate has far more ratings behind its score. Pick the Ultimate for a stiffer, quieter floor on a budget of effort; pick COREtec if you want a proven brand, glue-down option, or a paler, more uniform oak look.

• Choose the Ultimate Extra Large if you want long 72-inch planks, a thick 12 mm body with pad already attached, and the fewest seams in a large open room.
• Choose the COREtec Calypso Oak if you want a well-known WPC brand, the option to glue down as well as float, and a pale, even oak visual.