Actually getting a "well started" 2010 could be better than getting a brand new 2011. You can be pretty sure they are good eaters! Plus they won't be a whole lot bigger than a 2011, since a snake that is 6 months old (and likely been eating nothing larger than mouse hoppers or rat fuzzies) won't have grown too much.
The choice is yours though!
Welcome to the boards by the way, you have come to the right place!