Dirty Bertie or Dick King Smith collection for a 6yr old boy?

[coneflower]

I have a choice of either and would appreciate your advice, many thanks

Don't know Dirty Bertie but DKS is fab

isn't Dirty Bertie a bit young? it's one of 23mo DD's favourites.

Thank you, I don't know if DB is too young, I have been looking at mail order and using their age ranges....guess I will go for the other, thanks