I bought a set of the Craftsmen reversible ones a week or two ago and they have been very useful already. They allow access into some places that would be very tough otherwise. Sears sells several models and one advantage of this set is that it seems like the ratcheting mechanism is finer so you can work in places with less room. I found mine on ebay and paid about a third of what they would have been at the store at regular price. I think Sears has the 7 piece set on sale now for about $80.