Has anyone used Higromite?

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When I decided to start growing in S/H about 5 months ago I bought a bag of PrimeAgra from First Rays and a bag of Higromite from another vendor. I have about half my non-mounted orchids in each medium (25 in each). I refill the containers with 75ppm N in RO water and then once a month use straight RO water for about a week to rinse out the salts. I grow in a grow tent with a 400W HID lamp and a circulation fan on 24/7. The temperature range in the tent is about 20 degrees (60-80F) and the humidity is 47-60%.

I have nearly all my paphs and phrags in S/H, several phals, dendrobiums, oncs, dendrochilum, brassavola, brassia and several "noids" as well.

There is absolutely no difference that I can detect in the growth habits of the orchids in the two media.
I have not lost any orchids in S/H, either in Prime Agra or Higromite. All seem to be thriving in both.

Which do I personally prefer? I prefer the Higromite because it just looks better to me and I kind of like the green coating of fine algae on the topmost Higromite rocks.

Ken