This may be more of a question about fabric material, but just wanted to get some thoughts on which superfly to get. 70d ($245, 50ozs) or silnylon ($130, 19 ozs).

With 2 small girls (3 yr old and 3 mo old) we mostly car/quad/boat camp, but I do hike some, so I thought having the lighter tarp may be a good addition to my gear collection. Your thoughts would be appreciated.