Matrikote 90 vs. ITC-100

[Overmountain]

Like the title says. Anyone used Matrikote 90? I am familiar with the ITC-100 but some places are dropping it due to the price increase... (and it IS pricey.) I'm in the middle of my dream forge and wondering if it is as good as ITC-100...

I lined my old hard brick forge (strong as heck but inefficient) with ITC-100 and it had a dramatic effect in heat up time and heat retention.

Thanks...

-Eric