Astrid, I've been aware of that investigation for some time now (Petition: Victorian Abattoir Not Stunning Animals Before Slaughter). It is in fact the Victorian Farmer's Federation and the federal government who are investigating and the investigation centers more around the exemption that the abbatoir has to kill without stunning first. The RSPCA got in on the act a bit later. I'm not sure if they have ever bothered 'investigating' or just put out a press release on a topical subject.

As for the bolt meat tasting nicer I guess that we'll have to disagree on that one. We used to own a farm and slaughter our own meat (not to be halal just because when you grow your own lambs it's stupid to buy the stuff) anyways my Dad got sick of it and sent some to the abbatoir to be killed for us and they tasted awful compared to properly bled meat.
We'll also have to disagree on the humaneness of respective killing methods. I've seen animals have their throat cut and death is literally instantaneous whereas bolt killing can need to be repeated several times or more
When I became a Muslim and started eating halal one of the things I noticed was that the meat tasted more like the flavoursome, tender meat I had grown up on than the supermarket stuff I had become accustomed to since leaving home.

BTW SaraJane, I noticed that you mentioned that in conventional abbotoirs that cancers etc are just cut out but a kosher animal must be healthy. I thought this was really interesting because that is another point of similarity between kosher and halal.
When I was growing up we used to sell animals with tumours direct to the abattoir instead of through the sale-yards but I always thought they became pet food - maybe they were turned into pies ewww. I'm sure (read I really hope) that there are health standards for animals kiled for human consumption in Australia.

As well as eating kosher meat Muslims can also eat meat that is killed in the correct manner by a Christian who says a blessing beforehand.