Share Share on Facebook Share on Twitter Pinterest Email René René de Lambert is a contributing writer and the founder of RenesPoints. He is an avid Delta and SkyTeam flyer who has held Delta’s top Diamond Medallion status for many years and flown millions of miles. Website 2 Comments Jim 4 years ago Reply #2 seems to be the real #1! I’m a Diamond and hold a Delta Reserve card (have spent 30k) and RARELY get an upgrade, even have trouble using RU’s! James 4 years ago Reply Jim, what city do you fly out of mostly? Write A Comment Cancel Reply Save my name, email, and website in this browser for the next time I comment. Notify me of new posts by email.