+1 to what c-man said. Any old halfway decent hammer drill should be fine for tapcons. You must have not had it in hammer mode or your bit was dull. When the drill is in hammer mode it will be loud as hell!! Don't be afraid to use plenty of tapcons if you go that route, also be sure that when you screw the cabs into the 2X4/1X4, the screws are just short enough to not hit the concrete behind it and push the 2X4 off the wall.
edit: also be sure not to move the bit around(side to side) too much once the bit starts going into the concrete or the tapcons won't have enough concrete to bite when you go to screw them in. It will take you a few tries before you know how tight you'll be able to get the 2X4 to the wall before the tapcon will start to strip out.
Last edited by deftworks; 11-28-2011 at 07:53 PM.