Calling all cooks and chefs. I have a nice set of Henkles knives in a block on my kitchen counter. I do pretty well with the chef's knife (8" blade) on most things. However, I've noticed on the cooking shows that many of the chefs are now using the sontoku knives, which are kind of a hybrid between the chef's knife and a cleaver. Anyone know if they are worth the cost? I've got a $50 gift card burning a hole in my pocket, and the Henkles sontoku knife that matches my block is $42 at Bed, Bath, and Beyond.