If you want a passive set, probably one of the DC H10-13.4s on ebay just now are your best bet.
If you want an ANR set, then definitely try before you buy if possible. I recently bought a Bose X set and got rid of it within a month (sorry IO540) because I thought it massively overpriced for what it did. Sennheiser are probably worth looking at but DCs pretty much cover all the bases. On a direct comparison (swapped headsets with copilot in the cruise) there really wasn't much difference between the Bose X and the DC H10-13X. Bose slightly lighter, DCs better passive attenuation.