I'm currently a UA Premier member, but thinking about switching to another airlines because UA doesn't offer complimentary upgrades unless you buy a full fare. I wanted to know what the best airline is to get complimentary upgrades, what level you have to be to get that, and if you are likely to get the upgrade based on a restricted, economy fare. What's the point of getting a complimentary upgrade if you're a "silver" member and never have a chance? BTW, I usually fly from IAD to Ohio or the West Coast. Thanks for your help!