I've tried Bosch, Dewalt, Wiha, Wera (+ loads of other lesser brands).
For installation work the bits get worked hard - both driving in and removing screws - a good quality, high grip bit is even more important for extracting half-mashed (PZ2's invariably) screw heads.
I've not tried anything that can beat a Felo diamond bit (Allstar) for durability or grip - still have the original one I purchased about a year ago and it is still going strong (although have a few spares as the local stockist changed hands and changed their stock profile and slug them, madness IMHO). The bit set has an excellent magnetic bit holder that holds the screw head for really easy one-handed driving in difficult to get to places and easy, controlled starting without having to hold and guide the screw itself.