I'm sure Saintsteve will be along soon to recommend something from Zaino
I've used loads,
Megs ultimate, FK425, Auto Finesse, dodo juice, Miglior, GTechniq to name a few.
To be honest they all perform pretty much the same and as long as the car has been well prepared, polished properly, glazed/waxed/sealed properly and is washed correctly afterwards you would be hard pressed to see a difference between the different brands.