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You'r probably right again Burgs, I've only seen a couple of ES games in the flesh but they were particularly awful. One in particular Gordon v West? Harbour was so bad that I felt cheated, and entry was free! But I've also seen a number of their finals on TV and I acknowledge the standard there is very high.
Act comp a few years back was pretty ordinary, dont know what it's like now.
Apart from Campo I don't know of any top line player that started his career from there. There may be some though...