I am thinking of getting a Milwaukee M18 fuel drill/ driver combo. The drill is insane with 750in-lbf of torque. It comes with a hand tighten chuck though. My other Milwaukee corded screwdriver has a key tighten chuck and I like how tight I can get it.

My current drill (very old 9.6v Ni-Cad drill) has a 3/8in hand-tighten chuck. When I drill through steel with this chuck it comes loose. I'm not sure if more modern hand tighten chucks like the one on the M18 are better or not.

If I do get this new drill would it be worth it to get a new chuck, or would the one it comes with be sufficient?