Backpacking Tent: Big Agnes Copper Spur UL3

TL;DR - This is a great tent for two or three people. Its freestanding nature makes it much more flexible than a semi-freestanding tent. The perfect 2-3 person tent. When we first picked up an ultra-light backpacking tent, we let a good deal get the better of us. We found the Marmot Superalloy 3P (eBay) on sale - for less than half price of the Big Agnes Copper Spur UL3 - in the REI outlet, and didn't really know the difference between freestanding and semi-freestanding tents. After one trip, we knew we needed freestanding. Luckily, REI has a great return…