Is Mario Sperry's sub Grappling any good or would you recommend other no go intructionals?
Sperry's is good.
I would also recommend:
- Nathan Leverton's stuff
- Matt Thornton FJKD2, and the no-gi DVDs from the Spring camp.
- Roy Harris BJJ101 (3 vols) and armlocks (2 vols)
- Stephan Kesting's stuff
Sperry's was good when it came out, but there is alost more to choose from now. I would keep looking...