I do not rely on the CCS/Chademo network (for now) when travelling either and only use superchargers during trips. The several CCS/Chad that I came across were non-functional at the time (I use plugshare quite a bit as well). The reviews are helpful but I don't rely on them as I try to drive down to 5% or so. With the superchargers I know how many are open, and that they are working.I'm not writing off the whole network, just 20 - 25% (according to the JD Powers survey, backed up with a testing of over 100 chargers in LA by a journalist.) The problem is, one never knows which 20% isn't working. Although Plugshare is a very good resource it isn't helpful if no-one has recently used the charger one needs in the next few hours. And if you are traveling on a less-used corridor, that is very likely.
With that said, when I arrive at a destination I do use the flo network to top up where possible as they are pretty cheap (or sometimes free) and I have time to scout them out before hand. I have not had any luck at all with the PetroCanada/Shell CCS networks.
This strategy works for me but of course do what works for you. For my level of comfort I don't think I would take a non-Tesla EV on a road trip at this time. Local driving only is a whole different story.