Brand doesn’t matter afaik.
They are simple metal parts so they’ll last forever, unlike the plastic ones.
The rubber seals and o-rings are standard parts that can be easily sourced and replaced.
Grease can help seal them, however it also attracts dirt so not ideal.
There are plastics better than metal - but they are not cheap, most looking for plastics look for cheap and so often anything plastic you can get is junk.
I’m replacing my lead soldered copper with pex as I go.