I have the hilt impact and drill 14 lithium and loved them. I then bought a c12 and fell in love. I then bought a second c12 and barely ever use the hilti drills. I use the impact still but the drill never gets used. The c12 has more than enough power and the chucks really set it apart from anything else. Now my hilti set is 3 years old and it still works great and there batteries are amazing they last so long and charge in 20 minutes. But I just sent the impact out because the 1/4 chuck wasn't holding bits and there warranty department stinks. There was nothing else wrong with it and said it wasnt worth repairing and charged me $90 for a replacement. They won't give me the option of sending it in and if it's not cover under warranty calling you and asking what you want them to do. You have to agree to a price cap before they send it out. Which the rep said it should be covered and if not shouldn't cost that much at all. I was very upset with there warranty and customer service when I called. I would stick with Festool there much better.