Hi,
owning and having used almost everything that was discussed so far, I'd like to offer my opinion on this topic.
Personally I like the Snap-On Instinct handle with hex-bolster best, but the tips of their bits and screwdrivers not so much. I found some of them to be pretty rough/uneven and sometimes with a little nub leftover right on the tip which - depending on the screw - ruins the fit completely and you'll have a hard time trying not to slip out of the head while you turn the screw.
It's not every tip, not every bit, but every now and then I find a "bad apple". Actually the tips of their Instinct handled "non conductive composite" screwdriver series is much better. But that's a different story - and I don't think those would be the right choice for you.
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This brings me to the ultimate opposite - PB Swiss. The tips of their bits and screwdrivers are, I will call it "machined" to excellence. Sharp and ultra tight fitting. I don't really like their handle, although their ratcheting bit driver's action is ultra smooth. So my personally preferred combination is a Snap-On's ratcheting bit driver (either small or large) with PB Swiss bits. I have used PB Swiss bits in cordless drivers - but only for soft screw-joints. I would not use them for hard screw-joints or with an impact driver.
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Actually a lot of the Snap-On bits, basically everything that says "Made in CZ" are made by Wera - Most obvious if you take a look at the Snap-On diamond pop up bit-/screw-driver and the corresponding diamond bits.
This brings me to Wera and another important point: bit quality.
Especially Wera, but also Wiha and others I'm sure have different lines of bits that vary.
Besides the pretty important differences between hard/very hard bits for soft screw-joints like in wood (torque rises continuously) and rather tough than just hard bits for hard screw-joints like in metal (torque rises abruptly at the end) and then special bits for impact drivers there are also different qualities available. In my experience especially their bits labeled premium are best speaking of fit but they still aren't on a par with PB Swiss. Please keep in mind that this is complaining on a very high level by me - neither Snap-On, Wera, Wiha, Felo or so many other manufacturer's bits are per se bad - but once you know what can be had, you don't go back.
Now leaving bits and going back to screwdrivers, Wera has what they call "Lasertip" offered on their Kraftform 300 series Screwdrivers, the tips are pretty good and you'll notice the difference pretty well compared to screwdrivers with no "anti cam out" function. I have removed fasteners/screws with those that other screwdrivers wouldn't turn and slip right off. Definitely a good choice if the handle is for you. Also it's never bad to have the hex-bolster. "Machining" on those tips and fit is actually pretty good.
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Then there is Wiha - you could look into either "soft"-finish or "micro"-finish. "Soft-finish" being for dry applications, "micro-finish" for wet/oily applications. Again, not the biggest fan of their handle style but they get the job done, they have the hex bolster and their tips are good, too.
I'd suggest you try the different handles and find out what suits you best and what kind of tip quality you want - if those happen to be the same your colleague has - find a way to personalize them rather than buying something you're not 100% comfortable with just because they could get mixed up.
Kind regards,
Oliver