I'm not asking if you prefer a screwdriver or hex wrench, but what are some specific models you like? And why?

I'll start with my screwdriver. Locking bit head, and that cap lets me place my palm to hold it in place while I turn the screw to exactly where I want. Great for derailleurs.
Shop Kobalt 1-in x 5-in 7-in-1 Multi-Bit Micro Screwdriver at Lowes.com

Then I have my magnetic hex wrench set. Don't remember the model, but I drop bolts less