Excellent write up - thanks!
I am also a Auto-Glym 'slut'
but there is one Meguiars product that i really like and that's this one:
http://www.meguiars.com.au/productde...subcat=&show=1
Its really good for any faded black plastics - like the front windscreen plenum. I used it all the time on my Alfa and it gives a nice black shine that lasts heaps longer compared to Armorall. Also withstands the rain quite well.
cheers
Dan