I've tried all the usual suspects for screwdriver style hex drivers and L keys... Wiha, Wera, Bondhus, PB swiss, Snap-On, etc. Of those I'm partial to Wiha for the smaller size hex and torx drivers, but they're not perfect.
For larger socket head hardware they're OK, but for standard sizes 3/32" and smaller and metric sizes 3mm and smaller, all of the above brands seem to fit a little loose and are prone to stripping out the heads of the screws especially if they were overtightened or had thread locker applied.
In my experience none of the L-key or screwdriver style wrenches from any of those above companies hold a candle to what's available on the RC Car market for the smaller hardware. RC stuff uses a lot of small diameter socket head screws that are easily rounded out with poorly fitting wrenches, and several companies make excellent ground steel wrenches-- MIP being my favorite. The MIP wrenches are ground tool steel bits that are ground precisely to fit very tightly into the socket head on the screw and are heat treated to have hard enough surfaces so they don't round at the corners, but not so hard they'll shatter with a lot of torque-- they'll back out small allen screws even with loctite applied that would easily strip with a standard sloppy fitting L-key. They're not so hard they'll shatter if you apply a lot of torque to them, but I don't suggest dropping them tip first as they can break if dropped.
Pick up a set and you pretty much won't worry about stripping out smaller hex head screws again. They're about $15 each, but worth every penny. I used to strip out hardware on my RC stuff on a regular basis using bondhus L-keys and Wiha drivers and then cuss having to extract the rounded screws (especially 0.050" set screws)... no longer an issue with the MIP drivers, they just work.
Hudy makes excellent hex drivers too.
