I agree to all of the above and might add, that I am very happy with the LH program, even though I fly a lot in Coach. Sure, UA MP gives me 100% status bonus in coach for being PremEx on UA and UA/LH codeshares, but the ability to upgrade any fare class with my M&M miles makes my day. Buy a Q class ticket on UA and try to upgrade internationally if you don't have the systemwide vouchers... no way.