Originally Posted by
cake_mimic
I want to finally get a nice folding bike that I can use for urban riding and light- to medium-difficulty trail riding.
It depends a lot on what you mean by medium difficult trail riding. For riding over roots, rocks, etc, I don't think you want smaller than 26" wheels (which isn't terribly easily fly with, but possible of course). If you mean (relatively) steep crushed limestone, I think you can do OK with 20" wheels.
Can you give us an upper price and more details about what type of riding you want to do?
Cheers,
Charles