The Origami guy who posts here won't like this, but I suggest starting with the Dahon if this is your first folder. If you like it, you keep it and spend 1/2 the cost of the Origami. If you don't, you can probably sell it for close to what you paid if not more.
The tendency is to want to get the best bang for your buck right out of the starting gates, which is understandable, but with folders, one of the things I found out is that specs on paper don't tell you whether the bike works for your particular needs.
A few years back, I picked up a Giant Halfway. Thought I'd like it, but it took a few months of riding to uncover what I liked and what I didn't. Fold was quick. Construction was decent. All good, no? Yet two things really bothered me - 32 lb. weight and riding position where the saddle is pretty much directly over the rear wheel. All kinds of unintentional wheelies, and I'm not a heavy guy. The last one was a dealbreaker for me, and I sold it.
Don