I don't think penrith is as good as rosehill. Considering penrith is $15 and its disjointed and parking is a disgrace.
After attending most NSW shows in my previous job, most venues were ok, Newcastle was a good show venue. Moving up to Brisbane and attending a caravan show and the recent 4x4 show I must say the venue at the Brisbane Eckka grounds is a disgrace, disjointed, crap parking, an expectation that you can get the train and take your Engel fridge home that way too. Add to that some land appears to be sold off for unit developments further limiting the show venue. Brisbane organisers need to look for a more suitable alternative, with assistance from council.
In Sydney you are spoiled for venues including Homebush, Eastern creek, Rose Hill,Penrith etc