Jay and Sean both run brushless Wraiths(pretty much stock drivetrain) with no problems.
I've been running a dual stock motored truck with bone stock AX-10 axles with no problems from the axles. I have a set of built up AX-10 axles(CVDs,aluminum Cs and knuckles, etc) that I plan to build a brushless truck around someday. The only problem with Ax-10 axles that I see are the Cs and the knuckles and the weal driveshafts. The ring and pinion can become a problem if you run heavy with a lot of power, but that could be said of anything, but is easily solved with hardened units.