RE: First impressions: Bondhus ProHold ball drivers
I started with the Bondhus ball-drivers but soon switched to Duratrax because I need the larger handle even on the small sizes. But like the Bondhus' the print soon wears off and you cannot confirm the size so it becomes a trial & error to find the right fit. By having both metric & standard I can usually find one and they sure beat using allan wrench's most of the time. My greatest complaint is when you really need to tighten something they round off before the screw head. Fortunately because of the ball-end they don't destroy the socket completely so an allan wrench can save the day.
I use RTL servo screws and the ball drivers make this a snap.
Clay