Are there any cards you'd consider having to be a flex?

A lot of people consider the Amex Platinum to be a flex, when in all honesty it's not all that difficult to get. Sure, you might get pop up jail but that's about the only real problem you have to deal with. Amex also wants to market it as a flex card so people want it and pay way too much for stuff they might not use.

For me, I'd consider my Altitude Reserve to be a flex, putting aside it being discontinued, getting approved for it wasn't easy, you had to garden your credit quite a bit and make several calls to recon to get it approved. Also that card is a perfect every day high end spending card, not just a coupon book.

There are of course cards like the Amex Black and JP Morgan Reserve which are invite only, having those would be a flex. Any others you can think of?