hi chris ,and welcome to the zone.
i have seen all the adds for the 3 operators you named and they look all ok for price.
1,,ski kaos ,,i dont know much about
2,,ozsnow,,you stays in a clean but older place and you cant walk to town 10km ,the people i have talk to that stay there , are about 18 to 35 and all had a good time. they party hard at the snowy valley resort.
3,,mojo snow,,looks pretty cheap for price ,and the accomadation in right in town at the local pub ,rooms are clean and the pub has bands ect .
MORE TO LOOK AT.
[4] " the staion resort ",5 km from town .they got cheap deals ,and have a large bar with bands ect ,bit of a party place.18-40 age and familys.
{5] look into "ski rider" there ok in price ,food ok and clean ,my mates stay there its in the national park only 15 minutes to perisher ,if you got a few people it gets cheaper.
and they drop you up to the snow and pick you up by bus ,they got a bar and party nights there.18 to 40 age and familys.
just find the cheapest ,deal there all ok you will have a good time in all of them ,if it was me i would stay "out of your picks", if price is ok ,
at the mojo snow ,, the pub is a good place and you can walk around the shops and try a different bar.
if your stuck 5km or 10km from town and theres not much of a party crowd, your stuck.
do you want to get a bus down or are you driving??.
hope this helped you abit.
