Things got better as manufacturers now implement the standard correctly.
Nowadays you can plug any device to any charger and the worse that can happen is your device not charging fast enough (sometimes actually discharging).
So if you get a powerful enough charger, you'll be able to charge all your devices.
And yes, you can also do video out and for that you need to check the compatibility of your devices but it's still not that bad, compared to the days where you could fry a device by using the wrong charger.