Quick takeaway
DEWALT 20V MAX Cordless Drill / Driver Kit (DCD777C2) and Kobalt 24V Max Brushless Drill are very close in this matchup. When the overall score is tied, the right choice usually comes down to price, review depth, and which spec wins matter most for your use case.
Choose DEWALT 20V MAX Cordless Drill / Driver Kit (DCD777C2) if...
Pick DEWALT 20V MAX Cordless Drill / Driver Kit (DCD777C2) if its current price, brand, or design fits your shortlist better than Kobalt 24V Max Brushless Drill.
Choose Kobalt 24V Max Brushless Drill if...
Pick Kobalt 24V Max Brushless Drill if voltage and chuck size are the reasons you are shopping in this category. It currently costs about $40.00 more, so make sure those wins matter to you.