We don't feel qualified to pass grades/judgment on the Astros 2011 draft. But you know who is? John Sickels, of Minor League Ball.
Click the link for a full review, but here's your close:
A solid draft. Springer is an excellent choice, and the three subsequent pitchers have high upside arm strength. The rest of the draft balances upside with polish. Refined pitchers Trofeano, Dufek and Hallock provide some farm system depth and leaven the raw upside choices. Overall I like this, especially if they can sign Strubbefield or Flamion to overslot deals.