I don't have a Strida, nor have I personally seen one either, but I have to agree with bendembroski... if you're going to go for a 16" folder, I'm not sure you can beat a Brompton for a long commute. (I'm sure a Dahon is pretty decent too.) I haven't pushed my Brompton to 15+ miles yet simply because I haven't had it that long yet, but I've done about half that distance, up and down hills, embankments, into strong headwinds, packed trails, loaded with luggage, at night through the city, over potholes, through lots of people on a congested sidewalk, etc. I have the 6-speed Brompton Wide Range reduced gearing - I figured I would do more climbing, stop and start biking in the city than just out right flat cruising - and it's been really versatile: the earlier comment from BassNotBass about gearing being really important and maybe even more important than just tire size is something to consider heavily in your decision in my opinion.