Galvin Green Waterproof names

[njc1973]

Does anyone know what the difference between the following waterproof jackets are, they all look the same to me?
Al
Alon
Achilles

The Al is £100 more expensive so I assume it's the latest model but can't see any differences.

 

[User2021]

Achilles was last years model i think.

I queried the different waterproof trousers with GG last year as couldn't read many differences bar price - got a long reply about different materials used etc and different linings.