Hi David,

I've used both but simply prefer Fotospeed's FX30 odourless fixer diluted 1:4. I use this dilution for both film and paper. I also use their odourless stop bath.
It's more economical then the alkaline fixer I used. It also has quite a high capacity.

As I mostly use pyro developers I've not noticed any reduction in staining, re. acid vs. alkaline.