Lallemand s Yeastlife Extra Yeast Nutrient - Any Experience

Protos

I got me some (actually, a lot) Yeastlife Extra yeast nutrient, produced by AB Vickers and distributed by Lallemand.
I use it when I make starters and also when I repitch harvested yeast.
They say it's "based on readily available sources of nitrogen blended with additional amino acids, minerals and vitamins" which sounds nice.
I can't say I see much difference though. Maybe I miss something.
Does anyone else use it? What's your experience?

DBhomebrew

That sounds like Fermaid O (nitrogen derived from dead yeast) plus the trace minerals that Fermaid O lacks.

Protos

Lallemand also offer Yeastlife O nutrient, that must be exactly the same stuff as Fermaid O.