After looking for ages I've finally purchased an impact screwdriver. Hitachi 18v, which suits the rest of my kit plus a hitachi 18v drill body, got both for £35. Took it apart to check it out & it is mint inside. The brushes still have the taper on the nose. I've been using it with some standard wera pozi screwdriver bits & I think they are going to wear out quickly or break. Can anyone recommend a decent impact bit set? They seem to cost more than std bits, are they worth the extra or will std bits last ok in an impact screwdriver.