Arkypyro, it sounds like the Aussie works ok in your D30, in 2wd, 4wd hi/low; no bipolar behavior: silence in 2wd and then a harsh racket in 4wd hi/lo. "Clicking" doesn't really bug me that much, probably because I am using a Borla exhaust which will basically drown out any noise in turns anyway
I figure my YJ4 is, even with all the upgraded gear, would still probably only fetch $4000 to 5000 in a sale. Buying something which isnt an upgrade for a part needing repair, ie. a locker, makes me a little uneasy about spending more than maybe 10% of the value of the Jeep for the locker and install. That leaves me with with the choice of either a Lock-rite or an Aussie in the front.
And, I have heard only good things about Aussie (price, durability, warranty, reasonable noise, and great customer service (received an email respopnse from the Aussie Presidentt, Bill Cole, two hours after I sent a question out to him))
Only thing I might add to this buy is a set of sway disconnects. But, that's probably it for my modifications to this YJ4, barring repair/replacent upgrades or ludicrously sweet deals.