My favorite tools were specially created for me by my buddies at The Compleat Sculptor in NYC (they rock). Years of claying experience went into their creation and lots and lots of folks who have taken my classes love 'em! so I know you will too.
These are stainless steel and feel wonderful in your hand- balanced and smooth. They are easy to clean and last far longer than wood or plastic tools.
They glide over the clay just right, too. And if you happen to work in metal clays, wax or earthen clays - these tools work awesomely for those media as well!