It depends what you mean by 'decent'.
I had (in order) a Rabbit.de bike - which went under a van.
A Dahon Matrix 2009 - which snapped.
A Dahon Matrix 2008 - which snapped.
I have to point out that the Dahons had a max rider (and presumably baggage) limit of 95kgs. Which I didn't find out till they snapped. Even without that, I wouldn't say they were trouble free.
But the good thing about the Dahons over and above either the Airnimal or Montague is that you don't have to remove the front wheel to fold it. Which I guess is fine if you're removing it for storage, but not much fun if you're having to do it in a rush on a cold, wet February morning to get it on a train.
There are other clones of the Dahons though. At one point I was looking at a Bickerton Docklands, but it doesn't look like they're still available.
https://www.bickertonportables.co.uk/bikes/docklands/