My Crusoe came with a 3x9 setup. It's a hassle when the chain falls off the front rings while folding. I switched to a 1x setup (I had no need for the smaller chainrings for my flat terrain), but the chain still comes off at times.
If I was spec'ing a new bike, I would try a 1x setup with a clutch rear derailer and a narrow wide chainring, if I could find one big enough. I'm not sure if anyone makes NW rings that big, though (update: a two second search on ebay found several)
Why choose the Diamond Llama over another NWT? I love the way the Diamond Llama looks, but I would worry about it being too stiff for me. My Crusoe is really lively and fun.