OK, Martin (Razer), I have full confidence in you. If that's your experience I truly believe it. So that means that also on astro outdoors 2WD is better off with a ball diff surely? (I've read one other driver on oOple say the same as you)
So what about 4WD? It obviously works better then for 2WD, considering the DEX410 doing very well? My experience from B44 and Atomized B44 on astro is that the ball diffs have a very short life. If oil filled gear diffs give the same speed and handling I'd really prefer that! (Yes, I HATE re-building diffs!)
When Cecil Schumacher invented the ball diff (dunno the year), it was a massive improvement over the previous gear diffs. The Schuey logo depicts the ball diff principle. And I think it's just what you say Martin, it's preloaded! >> smoothness!
Sidenote: Any chance we will se Torsen diffs etc. in 4WD? (like in 1:8) Have Team Durango tested this already?
@Razer: I've lost faith in my driving many times

And whey you occasionaly drive well.... what do people say then? "Oh man, your
CAR looks good!"