Does anyone have experience with HESI plant nutrients?

I have been growing for a while now and love to constantly try out new products. I've used all kinds of nutrients from Advanced, to Fox Farm, General Hydroponics, Botanicare and on and on. The other day a buddy of mine asked me about HESI plant nutrients, all I know is some guy from the Netherlands uses them on a video on youtube. I am pretty curious as to how well they work and just if anyone knows anything about them.... Please let me know!

hesi are very good nutrients imo.very clean and easy to use.ive used them for many years with great results.