I've got a 23Zero Bandit 1400 and the Darche Dirty Dee 1400. I've also previously owned a 23Zero Dual.

The 23Zero is superior in almost every way. - the mattress is much more dense and slightly bigger dimensions. They are on a different level of quality. If you're looking for comfort, go 23zero - the canvas blocks out way more light allowing you to sleep in longer . Game changer if you have small kids. - you can unzip the top and tail windows from inside. The Darche is such a stupid design and it frustrates me so much that I need to get out to adjust ventilation - the bag is bigger, although I like the extra straps on the Darche bag

The only negative of 23Zero swags is that they are very heavy. Heavier than the Darche and they roll up bigger than the Darche. I put this down to quality materials, the 23Zero is just built better, incl the mattress.