I ended up ordering in a T27 in Wiha and a T25 in Wera, both x152mm (6"), I am assuming that the cylinder bolts are in the larger sizes for Husky and Stihl? That's why I ordered them in 6" length anyway.
Has anyone tried Wera out? They are German as well and from what I can find suppose to be right there with Wiha in quality.
After doing some reading on the feedback on the Dewalt impact driver (Dewalt changed something on the detent for holding in bits and it breaks real easy on the one I showed) I decided to go with a Porter Cable set with variable trigger instead. I use Dewalt everyday at work but I guess the little driver has something different than the full size impact. I had bought my son a set of Porter Cables a few years back never figuring they would take much torture, boy was I wrong there, I have put them through everything I put a Dewalt set through at work and they have taken it and still going strong.