Weldbilt would be my top choice. But they dont make a 40 inch. They make 1036,1236 Both with 55 in beams, 1242 and 1442's with 60 in beam. 20 inch sides and choice of 15 or 20 transom in those sizes if you order. They are welded and with .080 gauge. may have less ribs but their ribs are large...