We want to replace 2 toilets - master and upstairs bathrooms. ( We recently put a Kohler Memoirs toilet in our powder room and we love it overall.) I am thinking of getting the Kohler Highline for these replacements. Not the Highline Classic, the newer one that looks just like the Wellworth, where the sides of the tank are concave, not convex.

Is the newer Highline (not the Classic) the same toilet as the Wellworth? They look exactly the same.

We want comfort height, 1.6 gf, elongated seat. Any feedback on the Highline is appreciated. Thanks!