Hello. I second what Samhain said. I too have the Expedition Asym and bought the larger fly. Oh and the snake skins (wrappers for the HH) are great. They really make setup and packing quick and easy.
One thing when mosquitos are around you need to sleep on something that is thick enough to keep them from biting through. The first night I spent in one (back home in South Texas) I woke to find them gorging on the buffet I unwittingly volunteered.
-H