Dude - it's just a locker.
you should be happy you live down under - in the land of ARB,LOKKA, Fosters and vegemite (all i ate at ayers rock, it is a miracle i am alive) . for us there is import tax and shipment and all sorts of crap on top. I wish i paid like...200$ for a locker. since u can do it in your driveway- install it and if u dont like it just sell it. I guess anyone with a 8.25 axle will be glad to buy.
Me - I am running a TRUTRAC front and AUSSIE LOCKER rear - and i am as happy as i can be. however i am not gonna tell you it's all smiles per mile. here is the thing - We do not have snow here. only up north in the winter - and i had one snow trip - so i Can't say if it is good on daily driving.
I keep my libby for mostly offroading purposes (i must be insane. had me an XJ and a yota, a zook - all with big lifts etc - like....what the **** was i thinking? like...we have wranglers you know...) and i am happy with the setup cause my daily drive does not include the jeep.
Whenever i do some daily driving - I can't really feel i have a locker - cause..well...this is not a bmw X5. nor is it a lexus. It is an old jeep. I adjust the level of my requirements to what i paid for (jewish - all we do is adjust to what we pay for - i think it's like in the bible).
what i am saying is yes- it clicks on roundabouts. do i hear it? nope. "heavy metal took my hearing doctor"...but seriously- I don't really listen to it that much and you cant even hear it with AC and windows closed. I do not take the time and effort to listen to things non metallica related. Does it pop and bang? yes. 25,000 kilometers in 2 years (we have something called the metric system. we have big macs so no quarter pounder) I had it go bang twice. so what? I do not expect it to be flawless cause i drive a 12 year old jeep.
As for going fast on dirt - or anything rock/dirt related - well - this is the part where it is indeed flawless - here is my kj - before i had the DTT installed
https://www.youtube.com/watch?v=Xq_KBZnYMSs
No buttons to push - no compressors to turn on and fail- no air pipes to burst - just iron. never had a problem with going fast - on sand or on grass or dirt or whatever- it always performed real well.
In conclusion - It's all about funds really. If you expect a flawless product - look elsewhere. It is not perfect. as far as i can tell - It is 95% perfect. and if you get very picky about how you want your jeep to perform then a lunchbox locker is not for you. if you know full well that you get what you paid for - enjoy the ride. let's not forget that we are not talking about shit solutions like welding the spider gears or any other dumb redneck solution. this is a product that works and has worked more or less since world war 2 - but you need to know what you are getting.