SV have done away with the insert on their newer pot design, but it's still a lot to spend on a wax.
For me, on white, you need to go for a sealant. Wax generally gives a warmer, deeper look, which is great on dark colours and reds, but not ideal for white and light metallics, as they are naturally lacking in reflectivity. To address this a 'man made' sealant can add to the finish to improve this 'issue', to an extent.
This EvoX I did with Wolf's Body Wrap for example...
P1030958 by
RussZS, on Flickr