Bosch GSR18V-400B12 Drill/Driver Kit vs Bosch GXL12V-220B22 12V Combo Kit

Buy the Bosch GSR18V-400B12 if you want one drill that can bore large holes and drive long screws all day; its 18V brushless motor, 400 in-lbs of torque and 1/2-inch all-metal chuck outmuscle the 12V kit. Buy the GXL12V-220B22 if you want two compact tools: the 12V drill plus a 975 in-lb impact driver that the single drill cannot match for fastening. Owners praise the 18V drill's build and battery life; the 12V kit wins on size, weight and having two batteries and two tools.

• Choose the Bosch GSR18V-400B12 if you want a single full-size 18V drill for big bits, hole saws and heavy driving, and you value a 1/2-inch all-metal chuck and long runtime.
• Choose the Bosch GXL12V-220B22 if you want a light two-tool kit for cabinet, trim and assembly work, where the 5.4-inch impact driver and two batteries matter more than raw drilling power.