We had one with our first popup -- it was a promotion, so you got one free with a popup purchase. IMO, it was heavy, cumbersome and we used it only once. Saying that, it is only the two of us camping so we didn't need the extra room. The screen room is probably worth it as extra room for the kids (especially during a rainstorm).
2014 Ram 1500 Quad Cab Big Horn
2015 Jayco X23B