I have two hammer drills, a Black and Decker and Ryobi. Both are 20+ years old, made in the USA and still work great. If I needed one now, I think one from Bosch, Milwaukee, Ryobi, Dewalt, Hitachi or Makita would do the job. I also have a SDS Plus and SDS Max rotary hammers. For the cost, I could not justify my preference, Bosch, so I got both at Harbor Freight. Both have drilled countless holes 1 inch in diameter and larger with no trouble. I did spend the money to get Bosch bits for my rotary hammers and hammer drills and they are well worth the money.