Great shout Rich, I've taken similar products in tab format, one thing I find with tabs is when they dissolve, it gives of a carbinated effect that meant it over flowed on the first few mouthfuls. It also means you have to carry more weight from the tubes, addmittedly this is only marginal but every little bit counted for me in the desert.
I cant draw comparisons on the products you mentioned as I haven't tried them but comparing this product to Nuun tabs they are both equally as good, I wouldn't go into an ultra without something of this nature in the bag.
Hope this helps in someway.
Posted: 26/04/2012 at 15:41