Almost Leather vs. Fun Foam vs....?

I was wondering what the difference is between Almost Leather and Fun Foam. I seem to recall hearing that the Leather was a little denser? Does it respond to heat better?

Also, I seem to remember that the person who made Almost Leather had parted from that company and started a new one, with another form of faux leather. Does anyone know what I'm talking about? (Because I sure don't!)

Thanks!