The biggest change in "feel" is for a decent bike is going to be switching from the popular high-trail bikes of today to a low-trail folding bike created by the small wheel. My experience is that the 406 wheel roadie folding bike rides a lot like a classic low trail road bike.

If you've never ridden such a bike, I can see how one get's a little confused on the "feel" ... whatever that means precisely. But if you put a bit of the load on the front wheel, it's a fine riding machine in my experience.