What's the best power bank you've owned that lasts?

heads up i'm not the most techsavy person out there so id rather ask this question here instead of just watching countless youtube videos recommending me this and that. my use case is travel, i LOVE being out all day and to keep my phone alive i guess i like to top up on the go and until now i've used some old power bank that was given free as a gift when i bought my xiaomi 13t pro.

anyways i've finally figured it's time to buy an actual power bank that is high quality as the current one dies after one charge and i also dislike how bulky it is. should i go for something that was released in 2026 or pick something from last year? just because i have a xiaomi they dont have to be the same brand btw. thanks!!