The big thing for me with yeti vs off brand is the seals.

I went with off brand stuff for a few years and the results were always awful. Not the actual metal container themselves but the seals . Most of them you can’t even take off and clean properly , so after a few months they’re disgusting or if you take the seals off you can’t get them back on. Yeti’s make that way easier. I’ll never use another brand , so long as the quality holds up.