I used these products on my pride and joy (Audi TT at the time of writing) and no other brand comes close.
The names of the items can be a bit confusing but you soon get used to them. Pete at Gtech is especially friendly and helpful. Items are alwats dispatched quickly and there is also a forum you can visit (detailing world) or just email them and they are more than willing to give application advice.
If I could afford a Supercar then I'd still be wanting to use Gtech items as they are super products.