The Machados are known, generally speaking, to have a high sport BJJ focus.
Gracie JJ theoretically is more "self defense" oriented, if you listen to Rorian's hype.
Personally, I think you'll find that good BJJ is good BJJ whether it's Machado, Gracie, Dalla, De La Riva, Jacare, whatever.
"In the world of martial arts, respect is often a given. In the real world, it must be earned."
"A stupid man's report of what a clever man says is never accurate because he unconsciously translates what he hears into something he can understand. "--Bertrand Russell
"Liberals - Cosmopolitan critics, men who are the friends of every country save their own. "--Benjamin Disraeli
"A conservative government is an organised hypocrisy."--Benjamin Disraeli