Looking at getting some coilovers installed for my 06 sti but not to sure what ones are good. Aiming for getting the car low with bit more grip and control. Looking at spending around max 2000. What are everyone's suggestions?

using the Perth-WRX mobile app

The KW V3's are very good. I have them on my car. Probably above what you want to spend though. Be aware they have to go back to Germany for service and rebuilds. Unless it has changed recently there is no Oz based service for these.