Unlike many of the others, I won't claim there's a "right" answer to the OP's question. I gan share a few thoughts, though ...
Felo: New one to me, but they look to have the exact same handles as my (now defunkt) AT&G drivers. Simply superb handles!
Klein: One of the nicer things about Klein -as opposed to Craftsman, Snap-On, etc.- is that the Klein selection of bits actually lines up pretty well with the screws we actually encounter in electrical work. Especially with the slotted drivers, "mechanics" product lines all seem to be mis-fits.
Klein also popularized the soft rubber jacket over a hard plastic handle style of driver. While very nice, it is not a good thing if you're working around metal shavings.
My most often used driver is the Klein 10-N-1. I've tried most everything out there, yet I prefer it - even to other Klein multi-drivers. I use that tool more than all my other drivers combined.
One problem I have is readily telling the slotted drivers apart from the Phillips, the Robertsons, and the nut drivers - especially when I'm reaching into my back pocket. I solve this by having different brands; the handles feel distinctly different. I use Klein for the nut drivers, AT&G (Felo) for the Phillips, Ideal for the slotteds, and Stanley 100 Plus for the Robertsons. Craftsman is another with a very distinct handle.
I got away from Craftsman long ago for several reasons, and one of them was that EVERYONE had Craftsman at the time. You want your tools to be distinctly different, or they'll get mixed up and one guy will wind up with all the #2 Phillips and another will have all the 4" slotted drivers. Greenlee and Lenox have handles very similar to the Klein, but are very different in appearance. Something to consider.
Less often asked is: Who makes the WORST drivers? IME, Channellock driver handles (old style) are the worst; I've re-tasked mine into file handles. Almost as bad are the ones from the Klein subsidiary Vaco.