When I looked for one, it was hard to get one to fit me ergonomically: while I am relatively tall, I actually needed it to go pretty low (68-69cm for the top of the desk), and then pretty high when standing (>120cm).

I've gotten a no-name brand one and it still serves me well: with a couple (usually) electric motors in them, there's not much to differentiate between them anyway, so look for one that fits your budget and has the right properties for you.

You can check out https://www.reddit.com/r/StandingDesk/

I got an Uplift desk last year and it's good, but they're pretty pricey. There are probably cheaper options that work fine too.