Originally Posted by
UAPremierGuy
Well, this like all "should I upgrade" questions is largely subjective. The answer depends on how many miles you have, how many e-500's you have, when they expire, what you look for in an upgrade, whether or not you need to sleep on the flight/get work done, etc.
Bingo! If you have an unlimited number of upgrade instruments, always upgrade. Otherwise, I personally don't find it a good use of an upgrade instrument. I usually fly coach on domestic non-PS redeyes since I honestly don't get better sleep in either. Both give me airplane sleep, which is I guess all I can ask for. The food is nothing great, but it's something.