I bought the HSS set from Lee Valley . . . . but it is going overboard in price. I think the set cost something like $289. Haven't had them long enough to tell you a complete report, but I like them so far. BTW, I also bought one of their 3/4" brad points to drill the dog holes in my maple bench top and they were outstanding. Nice clean holes and seem as sharp on the last hole as on the first.