For weight and space consideration, the lighter the sleeping gear is and the smaller it packs, the better. Individual needs, especially with regards to tent size and warmth requirements, will dictate what to use.
NEMO Hornet 1P Tent
Light, one-person tent. Discontinued and succeeded by the Hornet OSMO.
Mountain Hardwear Lamina 35 Sleeping Bag
Sufficiently warm for a wide range of conditions experienced on trips. Discontinued and succeeded by the Lamina 30F.
Sea To Summit Ultralight Air Mat
Used the Big Agnes AXL Air for a while, until it started to develop multiple leaks.
Exped Air Pillow, Medium
Providing some sleep comfort at an ultralight weight. Discontinued and succeeded by the Ultra.