Big_e,
Congratulations on your frugality. It looks like you have a great folder there. By "great", I mean, it rides, and it folds, and those are the most important things.

I own a Strida, Brompton and I just picked up a Dahon Boardwalk for $200. The latter because I wanted a bike I could try locking up in NYC and if it got stolen - oh well.

I compare-rode them all recently. They ride different, and they fold different, and I like the more expensive ones better, but then again those are more expensive, and I don't know that I like the others 4-5x better.

Your Schwinn looks very similar to a Boardwalk. I prefer the look of the Boardwalk frame, but your bike has two things mine doesn't: a rear caliper brake instead of coaster, and a full length chainguard - both very nice.