One thing I have noticed on other forums when a change of software takes place, there are a lot of BB codes and user links (such as the little arrow in quoted posts that takes you to it's original post, the user rep and itrader stuff, etc. just to name a few) that tend to get broken or lost. An update to a later version of the same software I think would help avoid some of those issues.
As for smartphones and mobile, I've mostly abstained (too small screens, atrocious flexibility, less privacy control, too many other issues). I generally will have my laptop with me when I travel anyway. My experience here is almost solely from normal computers, so I can't really comment on that side of things.