Different products will give different 'looks' to the finish, some tend to add depth but slightly dull the shine, some add heaps of shine but don't give a lot of depth. You're in the awesome position of living in Melbourne and being able to take yoru car down to Final Inspection and get great advice from a pro. Damian will be only to happy to advise you on products etc. You might also want to sign up to the Detail Addiction forums which are run by Damian and full of great advice as well. http://www.finalinspection.com.au/forums/index.php