I have seen and ridden a Downtube viii. It seems very nice and fits me (5'2) much better than my dahon speed8 (I had to change the handlebars - speed8 is way too long for me and causing back and wrist pain). Seat is much nicer than speed8 to me and it is standard type so it can be changed. To me it is very similar to my friend's KHS F20-iv. I do not know how it would fit a taller rider (although handlebars are easily adjustable with quick release) - but for my height - downtube is much more comfortable. I don't know anything about sunrace componants - shifting worked okay as far as I could tell and the chain has not fallen off yet nor have gears been slipping as on dahon.
Last edited by farrellcollie; 07-21-05 at 10:41 PM.