Since fostex only provide poor quality black and white pictures of their horns (*&^@#!!!) I searched the net and found some colour ones.

pictures from http://melhuish.org/audio/DIYBX14.html

They look nice but they are very very expensive :P H400 is something like ~$500 each (shown above), and the other models are even more.

I think they arn't as "dazzling" as Martinelli's horns, but they probably sound really good (they better well for the price!).