I respectfully disagree with some of the suspension opinions here.
I have been selling folding bikes for 15 yrs. My best selling model has been the full suspension ( people love them ). We have many reviews on the website. I have consistently rode a 9FS for most of the past 13 years ( it's my favorite & I have one in my office right now ).
I am a cyclist that raced in my youth and toured across the USA twice. Our $500+ bikes have solid mid range suspension forks. They make riding safer, and more comfortable. The cheaper models have a lower grade fork....but a suspension fork is always better than no fork on a small wheeled aluminum frame.
Thanks,
Yan