Brand new to folders here, but pretty experienced with road and mt. bikes. I'm a guy who loves travel and photography and am looking for a good, somewhat inexpensive, folding bike to carry my 6-2/210 lbs. on various types of roads...maybe some light trails too.

So far, I have seen (photos only) the Dehans, Downtubes, Bazookas, and Schwinn. I'm looking for something I can carry on a flight, ferry, or taxi. I know there are many choices and believe the importance of a test ride...however, my local bike shops are very limited or don't carry any folders. I prefer steel frames on my full size bikes, but that's mostly due to when I am riding 30-60 miles and don't want the aluminum road buzz from a chip seal road on 23c tires...painful. Your thoughts as to possibly 2-3 brands/models I should consider? Any online sellers you have high regards for would be also appreciated.
Thank you in advance.