Among manual sets, the iFixit is the pick (~$40): top-two
in the T10H and PH00 strength tests, 64 well-chosen bits, and the storage,
ergonomics, and swivel-cap ratings all at or near the top. Its one measured
weakness is bit retention — the magnet let go at just 202 grams, near the
bottom of the field. The PB Swiss and Wiha (both 3.4) are the bit-quality
champions — tied at 8.7 in-lb on the brutal T6H test, first and third on
PH00 — but each ships far fewer bit options than the big kits.
The LTT set is a genuinely split verdict. The screwdriver itself is the best
handle in the lineup — best-in-test bit retention at 930 grams, the
strongest included magnet, and top ratings for ergonomics, endcap, and case.
The small bits let it down: its T6H and PH00 results landed near the bottom.
It's a superb driver that deserves better steel in the tiny sizes.
For electric kits, the $35 Soleilwear is the clear recommendation: the
strongest bits measured in the whole comparison (40.7 in-lb in manual mode),
just over 200 RPM, and a usable 0.5-to-1.3 in-lb torque range — the low
setting matters, because delicate fasteners are exactly where an
over-torqued driver does damage. The TanSon and Fanttik are strong
alternates, and the $16 TANYO hides the single strongest slotted bit in the
test (36.8 in-lb) behind its one flaw: no low-torque mode, and 1.7 in-lb of
peak torque is a lot for tiny screws. The one set that disappointed
regardless of price was SK Tools — loosest bit fit and last place in both
Torx strength tests.