I use both the single and double rainbow, and agree with the other posters that you'd be better served by the double. It offers WAY more space considering the small weight increase (and I'm a gram weenie), you'll both fit in comfortable with most of your gear as well. The double entrances make it very enjoyable too, when beach camping I open up the ocean-facing entrance when the weather is nice, and use the alternate one when the wind/rain picks up.