Dude I shred buller almost all year round. I have been to almost every mountain except Baw Baw, which is just shit. Hotham is very flat with a shit park and no one up there does much freeriding. Maybe Jake Rast and his mates but thats it. Falls is shit early season. They only ever put effort into their park when they have a bumper season. I enjoy Buller because it has a VERY strong freeride community. Consisting of Watkin, Johnny, Ryley, Ollie and others. Thredbo and Perisher (especially Perisher) are the pioneers to freeriding in australia. Almost all the comps are at Thredbo and Perisher. They manage to maintain a high snow depth and build awesome parks. There is a downside of all this. It is extremely expensive and it is much cheaper to just fly yourself to NZ