the front and inner diffusion needs to be partially detached in order to set up and pack away
That's good to know. With the 12x56 strip box, I am able to collapse it and fit it in the bag with both layers of diffusion and the grid still attached, I just need to remove the deflector disk and skip the velcro strap.
Being able to pack it up quickly without having to remove the diffusion panels is a huge deal. The Parapop can be easily collapsed and stored with both diffusion panels still attached. The cheaper $20 Quick Softbox requires removal of the outer panel, but you're just fine leaving the inner panel.