For ulitimate protection use a ceramic topped with as durable a hydrophobe as you can find.
Although to do this justice a refurb first or wheels of and a full decontamination of the wheels is the way to go.
For cleaners, Valet Pro is very good and can be diluted to suit the requirement... which is very usefull and also economical as you only need to use enough to get the job done..
I'm just trying out Sonax Full Effect which is also good, can't be diluted mind, and is perhaps better suited to unsealed heavily contaminated wheels.