Comprehensive Ground Sub Program

What do you guys think about this tape series put out on no-gi submission grappling? Any ratings or reviews?
It's available at:

Back when this site had product reviews, there was a thread on the Practical Grappler series. I remember it getting positive reviews.

Anyone else please?

if you need the basics. its a pretty decent set.i bought it 2 years ago. i think i still have the list of techniques on each video somewhere. i could email it to you if you want

I have it. It's a good basic intro to the game.

Who's series is it? I read through the credentials, and it lists like 20 famous names they've trained with...