I have no affiliation with Bogong but their tent buying guide is awesome. The link below will take you to an 8 page PDF tent guide (largish file - 914k)
I used this when selecting my tent and was happier still when a local supplier had them cheaper!
http://www.bogong.com.au/TentsLinear.pdf To answer your question gorby, the tent I have is a Sierra Leone Ultra (not in the guide above as it's last years model). In the photo of the three tents mine is to the back right, the yellow dome!
4 Season - 2 person - 2 vestibule - 2 doors - 2.9Kg
This is an awesome tent. I can set it up by myself. This did take a bit of practice in the back yard first!
It has good sized vestibules and dual access which I like when bunking with a friend. There is a great overhead hammock and vented storage pockets above your head at each end.
Ventilation is great (when you don't forget to open the inner vents a little as well as the outer ones)
Have had it out in a wide range of conditions and am really happy with it!
I'm not entirely sure of the other tents but know that they too are rugged enough for the beating they get and have some nice comfortable features!... the key is to read, read, read..... Do lots of research and get the best tent you can afford....
Cheers, Erin
P.S... off to Frenchman's Cap in a few weeks... will post some pics!