Instead of an electric tooth brush, Google "Sonic Scrubber" (yes really) sold in Halfords in the UK but I have never tried one.
But, if you have rust on the chrome, then the chrome has been damaged and you will face a lot of work to keep them rust free.
Having had both, the Stainless Steels wheels are much much easier to look after and I suspect, that if you wish to keep your car pristine, may be the (expensive) way forward at some stage.
Last edited by Brian V; 03/02/13 09:14 AM.