As I was struggling to get my B&D Professional drill apart at the weekend to replace the power cord (fortunately, the conductor I could see the copper of was the neutral...) I suddenly realised that the screwdriver I was using was (i) knackered & (ii) probably 30 years old (and cheap to start with).
So, I'm going to treat myself to some new screwdrivers. But is it worth getting ones with exchangeable tips? The Wera diamond coated ones I bought for my (crap) DeWalt electric screwdriver are brilliant.