Ive had my birds in both for several years.Everything is to do with how many birds go in a basket/crate.With the Snfc, they have fewer birds in the basket so I would say it doesnt make a great difference. However,Geraldy unquestionably has a better watering system for the birds and this is imperative at long distance races. I am not part of any fed so I have an unbias opinion, GERALDY 100% for me.