I went with Swan Energy last year, and I recommend them. They used German 200kw panels and a quality inverter. They're mostly commercial but do domestic as well.

We put a 1.4kw system up to take advantage of the rebate, which was expiring at the time, but we're looking to extend it to 3kw in the near future.

It probably knocks 20% off the bills but we use a lot of power. 5 PCs running most of the time, a pool pump, and the aircon is on all day because I work from home.

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Classic WRX all the way ...