My 40 year old hammer drill with chuck key. No need to replace what's not broken. My Dad and I used to buy each other useful presents at Christmas. I'd say this
How to remove an old bosch drill chuck? - Home Improvement Stack Exchange
Bosch 8.5-Amp 3/4-in SDS-Plus Variable Speed Corded Rotary Hammer Drill in the Rotary Hammer Drills department at Lowes.com