The Pro is $155 more and 3.4oz heavier! Oh, the wages of cuben! The coverage looks much better, but it will only save me 3.5oz from my Gatewood, and that cost per ounce is too steep for me. I might try the Cuben Poncho and take a gamble. I have a bivy if I need it, and a cuben quilt, so I am not as concerned about sidewall condensation or over-spray. It will shave 7oz off my shelter system for an acceptable cost per ounce. If it is a bust, then I could always throw it up on Gear Swap and cut my losses. Still, if anyone out there has spent some nights under the Cuben Poncho, I would like to know your thoughts.