I would rather the Australian company (Foti fireworks)... but of course this is a question of taste. Both companyes won a jupiter in the past, the Australian one won the silver in 2006, and the company from hong Kong the Bronze in 2003. This company competed in 2007 again and they didn't win anything.
The price maybe is expensive but we're talking about the most prestigious fireworks competition, with an unbelievable organitzation and a huge budget.
It depends also on you, if you think you are willing to pay 40 $ to see fireworks.
I have to say that see the fireworks inside la ronde is a very good experience. The sound system is amazing and the view over the lake is perfect. There you will appreciate the low efects and the atmosphere of the display perfectly.
People pay more just to see some guys chasing a ball... so as I said it's a question of taste.
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In the gold section there is a bar where you can drink whatever (I remember champagne and wine, but I don't know if there were harder alcohols)
I don't know if there is a bar also on the Silver section (but I don't think so...)