This is the GOOD one - the FLEXVOLT Advantage - DeWalt’s flagship - it works with 20V, 60V, or Flexvolt batteries. Use the 20V battery and it works just like a standard 20V grinder. Use the 60V or Flexvolt Battery and get a 50% power boost over the 20V. Paddle switch operation. All accessories included. Used only twice - gently and carefully - but has more power than I need. $279 at Home Depot, Lowe’s, and Acme Tools online. If you need a serious angle grinder, then you seriously need this tool!