As far as value combined with durability, comfort, and quality, I find Wiha to be the best. The majority of their screwdrivers are German made afaik. I prefer Wera's handle design to Wiha's, but the tips on them just didn't last like I feel they should.
The Wera lasertip design is superb, but I feel that the durability went down when they switched them from German to Czech manufacture. I have a German made Wera phillips that has lasted through four Czech made drivers. I was on my third Czech-made Wera #2 phillips when my Wiha insulated #2 phillips driver that was purchased at the same time, was in need of replacing.
I like PB Swiss best of all, but their handles are just too small for me, even the larger Swissgrip version. If your father has more average sized hands, and you don't mind ponying up the cash, that might be a good option for him.