The Brownell's brand Magna-tip screwdriver sets are very good also. Comes with a long and short magnetic handle set. The bits are easy to replace and the variety of different bits is virtually unlimited.
I've got a special bit for rubber butt pad screws and also a bit that fits the Millett type Cross slot sight screws.
Very good value in a set which can be added to at will. I've had mine for about 15 years now at least.
Regards