I haven't seen that one until now, but it looks pretty cool. My only issue in the past with McC's is just how expensive they are and the older batteries in plastic housing were just always needing some kind of repair. We finally got rid of all of our old ones over the summer and are just plugging in wherever we go.
However, We are looking into two other brands you may want to consider as well. Check out portable power from Ecoflow and Anker. That's what I am currently researching for next year.