For anyone thinking of an inexpensive three man tent, I have a suggestion.
http://www.karrimor.com/karrimor-xlite- ... e=78311516Cheap and cheerful.
I have one of these, and whilst I would have to think hard about taking it somewhere really dreadful it has done good service in general bushwalking conditions (i.e. Not SW Tas, Sth Island, or Patagonia !). Pretty heavy, but it can sleep three normal sized people well, and the huge vestibule can handle the large packs. The side entrances are very convent. Some of the stitching on mine was a little frayed, and the cord around the zips falls off easily, but it is waterproof and weighs about the same per capita as the average two person tent. Head height is ok too.
Of you can just cram into a Macpac Olympus. I once spent a week in Far North Qld sharing an Olympus with two other, big, lads. Now that was squalid......