Doesn't anyone use Crystal Dry?

I've been poking around the forum for a bit now and have noticed a near total absence of anyone mentioning Crystal Dry products from Whittaker. As it stands they have been my primary Encap/HWE product for a few years and I honestly haven't tried very many other products, a few free samples here and there but Crystal Dry is pretty much all I use.

Am I missing out on any better products?

Anything that performs the same or better but is less expensive?

Any reason why there seems to be a marked...

Doesn't anyone use Crystal Dry?