KDS18 for far better loading flexibiilty, and you can truely BobLoad it without worrying about blocking anything with the single-wash level older models. The 18 and 23 series were probably the best performing KitchenAids before Whirlpool canned the Hobart-designed porcelain tub style for the new SS interior tub 24 & 25 series, which I saw were nothing more than glorified Whirlpools.