Coat d'arms is exactly precisely the old
GW,
imo both are great paints (old and new
GW that is), the Vallejo I only know model air which is awesome to use directly in your airbrush even if you don't know how to mix.
The
GW paints are doing perfect in the airbrush now that I know how to mix them too.
I have no experience with the Vallejo game or model - or reaper paints, and the painters I've watched were more between Vallejo and
GW in general.
Unless you're buying a lot of paint at a time, I find
GW paints much easier to procure, but clearly the alternatives are better priced.
I don't like the dropper bottle on the Vallejo when using a regular brush (even less now that I have good brushes) , but then I haven't started using a palette and that may be why.
Also, you should ask for your thread to be moved