The "best" screwdriver depends greatly on the use and expected abuse, I have a quite a few (hundreds) of "all" the major brands. USA and quality imports, I favor the ones with handles that "fill" my hand, have a "spot" for a wrench on the shaft (hex or square). I don't like the new "soft grip" handles in the machine shop, they quickly get full of bits of sharp metal.
I am not a collector of screwdrivers, it was a "market research" perk of the part-time tool sales job.
One hundred bottles of Vodka on the wall...
Today I will gladly share my experience and advice, for there no sweeter words than "I told you so."