I use mostly Turtle Wax products as I find they are affordable and work really well.
I use Turtle Wax wheel cleaner, glass cleaner, and wax.
I also use alot of AG gear such as polish and other bits and bobs.
I have a wheel brush my dad picked up for a few quid and it works wonders with TW wheel cleaner, really gets the job done. I then use Autoworks Tyre Shine to black up the tyres, I find it leaves quite a natural looking finish as opposed to the gel you can buy that makes tyres look 'Too Black', if that makes sense,
Here's a few examples of wheels cleaned:
First is of a Merc ML, the second a Ford Probe.
I find that alot of the Simonez gear also works pretty well, like their foaming dash cleaner and carpet cleaner.
For exterior black plastics I use either Simonez trim restorer or Auto Glym bumper care, the bumper care stuff works brilliant and doesn't smear whatsoever, the Simonez stuff is good but not on surfaces where it's likely to run, like door handles etc.
Here's a before and after of a Fiat Punto I did using Auto Glym bumper care: