If you’re looking for the ‘best’, we have the Powerblock exp pro w/ that go up to 90 lbs (current models go up to 100 lbs))
We’ve been using these multiple times weekly for 6+ years and they work and look as good as new. The design and comfort is excellent. Basic features that just work well and not many parts that could possibly fail or break.
I’ve seen other brands and models that look good/slightly more comfortable, but unsure if the designs will be as reliable.
Of course, these aren’t cheap, but some weight lifting things you definitely get what you pay for.