A nice production screw driver is an ingresol rand unit. You set the torque with a special key and it rotates real fast when you push down.
800$ or so new, but you can get em on ebay cheaper. Corded though. By cheaper I mean 20-60$.
https://www.ebay.com/itm/EL1007B-Ingersoll-Rand-700RPM-24VDC-Electric-Torque-Screwdriver-Used/252782446681?epid=2254656839&hash=item3adb020859:g:3nIAAOSw3v5YrZlLreal weak one but you need a 24vdc psu for it
The secret to using this shit is to put a power strip on the ceiling next to a hook. If you can step on a sturdy table or chair to plug it in its not so bad to use one. I hate corded tools too.. The one I have is mains powered with brushes but that one runs on a controller. It's not terrible if you have the controller on a work bench next to the soldering iron controller. Slides right into a drawer. For some reason plugging it into a control box with dials on it irritates me much less then plugging it into the mains.
If I used it more often I would make a special reel for it, since it has a disconnect feature (screw thread cord)
As far as miniature non torque controlled ones,
I actually really liked the 20$ unit i bought from Lowes. My wiha tips fit into it, but I broke a gear (metal actually) playing games with it (it should be more then good enough for most screws, but its slow, but I still prefer it to turning something I find the motion uncomfortable.) By playing games I mean twisting it back and forth while its on holding on it really tight.
https://www.lowes.com/pd/General-Tools-Instruments-Assorted-Multi-Bit-Screwdriver/3138079?cm_mmc=SCE_PLA-_-ToolsAndHardware-_-SpecialtyHandTools-_-3138079:General_Tools_&_Instruments&CAWELAID=&kpid=3138079&CAGPSPN=pla&store_code=1584&k_clickID=9f2d23c1-7bb8-4621-90b8-92e14960f20a&gclid=EAIaIQobChMIrti4w_id3QIV0QOGCh2lfgUDEAQYASABEgKvPvD_BwEYou can actually modify it for higher speed if you want:
Obviously don't use it for big screws on the back of a PC like he probably did.
Yea, but for 20$ I was actually impressed. You can mong out and stare at things while you work.
Does anyone know if the higher end ones like Wowstick have a planetary gear mechanism?
Hehe, for mobile electronics you should polish up the work with a torque adjustable screwdriver anyway.
In general though, especially with torque adjustable things, if its possible, you should just the most simple robust thing (normal screw driver) to break away screws, so I can live with the cheapness. I like to use my adjustable torque wrenches to tighten screws fully, so I am happy with the cheapest motor thing possible to do the job, unless its a production tool like the ingresol rand thing. The clutch is probably monstrously overbuilt. I don't know if I would like to use a ES121 120$ pen to break tight screws even if it has a planetary gear system inside of it.
I think the biggest danger to these things is trying to untighten screws that are being pressed on by shitty deformed panels that are kinda snapped into place (like a bent PC case) or fighting locktite.
Have the owners of these more expensive micro screw drivers found them to be reliable?