I've been platinum on Delta for a few years running and it's absolutely beneficial. 3 free checked bags, priority boarding, free economy+ (which includes free

I've been platinum on Delta for a few years running and it's absolutely beneficial. 3 free checked bags, priority boarding, free economy+ (which includes free food & drinks on longer domestic flights), and automatic upgrades where available. I get upgraded about 75% of the time. If you have status you get used to it and don't really realize how nice some of the perks are until you fly on an airline where you don't and end up feeling nickel & dimed to death, herded everywhere like cattle. <edit> I misread "global" as "good" and answered the wrong question. They're global. This is why the alliances have their separate award levels. Here's an example: https://www.oneworld.com/ffp/my-oneworld-tier-status https://www.oneworld.com/ffp/my-oneworld-tier-status