I have to agree the Bose X is the best. I have had Sennheiser, Lightspeed ANR's and nothing comes close to the X's.

If you are a CFI you may still get a discount. I know Bose for quite some time ran a discount to CFI's for the X's. That may have passed but was the case a year or 2 ago. Call them and find out if it applies to you.