So I'm taking my first steps to lighten up. I'm going to sell my MSR Muttha Hubba NX in favor of a Big Agnes Copper Spur UL2. That should save me around 2 pounds give or take the foot print. I really like the features of the Sierra Designs High Route 1FL but its a one-person and I think I need to stick with a two-person shelter. I like MSR and considered the Hubba Hubba NX but the Copper Spur seems to come in a tad lighter. Am I on the right track or should I be considering something else? Also is there any reason to buy the Copper Spur footprint or would a Tyvek one be satisfactory?