Anyone got advice on the best protection/wax for vinyl bonnets etc

IME....Nothing special

A good wax is fine

A good spray wax/sealant 

Heard Maguires is good

Which wax from Meguiars?

The Meguiars spray wax ive used is not great..

..their Gold Class Paste wax is ok..but nothing special

Why not have a look here:

http://www.cleanyourcar.co.uk/

Ring them and ask for Tim...They give great advice always

My uncle used AG Vinyl and plastic trim protection on his wrapped octavia. Always brought it up nice.

Though I've no idea if that's good or not.

Got told the maguires ultimate quick wax spray

I found this for you:

http://www.vehiclewrapping.com/2013/04/how-to-protect-that-shiny-new-vehicle-wrap/

Thx pal