If you want best fold/ride combo then it has to be Brompton. I've tried a few others, and had to be dragged kicking and screaming to the Brompton, but it is the best.
If the fold doesn't matter so much, and your car boot is big enough, try the airnimal. Bigger wheels.
And I am on my second cyclescheme bike - I don't know what the problems you see with it are, but for me it has been good. Maybe it varies from scheme to scheme, there are different versions.