How many guns do you own? Brownells sells their Magna-Tip line in sets to fit particular guns. I bought a set of bits which will fit all the screws on an S&W, plus a handle, for around 12 bucks. Accumulated some additional individual bits, a box, and another handle (I like the shorter "Law Enforcement" style best), and now I've got a set of screwdrivers customized for my guns, all for around 55-60 bucks.
I retired the Chapmans from the gun toolbox, and now use them around the house. The Wheeler Engineering sets Midway sells look nice, too, but I'm sold on the Magna-Tips.
You will never regret buying quality tools to work on your guns.