Mashrafee is the one. But, Robi isn't that far. We need to see more of him in different conditions. I saw Robi at the Lord's when he was a bit more raw but in between he sent down some unplayable balls, too.
Wish him all the best. Certainly, he is very quick to LEARN from his experience.
"None are more hopelessly enslaved than those who falsely believe they are free" ~ Goethe