Errrrr ...and the fact that you can buy three 505,s for the price of one 407 !! Add to that the broom cupboard....I have used the 407 a number of times heliskiing and it’s not very comfortable in the back and quite tight and poor outside viz .
The more I think about it the more I think the 505 with 3 or 4 blades and an extra seat would be a squirrel basher !!