My rumaweep using concrete (RC wall) hence thats why using rotary hammer. Using hitachi SDS bits (valued at Rm2); as it came in a 5-for-9.90 set. I have spares but hardly wear out even went to 2nd bit even when drilling customer place for curtain rails, easily 20 plus holes for 1 unit.

It also depend on right tool for right job I guess. I dont think my wall plug bit (SDS 5.5mm) even exceed 10min total runtime for 30 holes.