Tents
The question not often discussed on this subject is: how tall is the user? I'm 5' 11'' and find some of the ultralight tents are too low in the headroom dept. for me. I'm a big Hilleberg fan but found the otherwise excellent Akto gave me a stiff neck so I bought a Nallo 2 instead. Not light at 2.1 kgs but positively luxurious for one + kit.
A number of tall friends in the Backpackers Club have the Terra Nova Solar 1 (now discontinued but still some available from:
www.terra-nova.co.uk). The new TN Ultralight range is worth looking at, especially the bomb-proof Voyager SL at 1.84 kgs.
Another range of tents that are gaining popularity among backpackers is "Lightwave". Designed by a New Zealander for tough conditions, I've recently bought their lightest one-man (t0 Ultra, 1.4 kgs). Haven't tried it in anger yet but can report back. I hate being "cramped up" in a tent and this seemed the best compromise between inner space and weight I could find.