EXECryptor 2.x is more strong protection than AsProtect/Armadillo/other packers. In EXECryptor case we have next statement "protection <> compression", because EXECryptor introduce new concept for code protection - non reversible metamorphing code transformation.
Also EXECryptor include buildin crypto-strong short serial number support (12 chars!)

On this time I don't know any solution for reversing EXECryptor 2.x.