Solar Systems Quote in Perth WA

Hi,

For those living in WA, keen to hear how much you are getting quoted for solar systems in the recent months? Particularly for a 6.6kW system.

I've been quoted this and not sure if its good value:

$3600
- 20x Risen Energy 330W mono perc half cell solar panels
- 15 years product warranty
- 25 years performance warranty
- 1x Huawei Hybrid 5kW inverter

$4300
19x TW Solar 350W mono perc shingled solar panels
- 10 years product warranty
- 25 years performance warranty
- 1x Fronius or SMA 5kW inverter
- 10 years manufacturer warranty

Are these good prices?

Not sure whether its worth paying more for Fronius/SMA (which one is better anyway?). And whether Risen Energy vs TW Solar panels are comparable. Would love some insights from those who have gone through getting solar quotes before, in particular Perth area.

Thanks in advance!