I had to get rid of the 2nd edition one year ago because of a contact/short issue. :(
So useful to know who was speaking in mumble/teamspeak when I had only one screen...
And the shortcut keys were useful at the time (I don't have much use for them now).
Edit: I've seen the video and yes, I forgot how CLEAR the software was. It was extremely easy to set, set the shortcuts to work as you wanted.
The current new logitec soft/driver is an utter shit, buggy, extremely confusing (I gave up on trying to setup the backlight how I want it because how stupidly confusing the UI is) and crashing all the time.