Advice needed for a tent

As the subject says I am seeking some assistance with selecting a tent. I am getting together some equipment so that I can start doing overnight and longer walks; working up to do one of the multi day walks around Christmas, probably in Tasmania or New Zealand. The walks will be for my wife and myself.
I live in Brisbane and I am tending towards having two tents, one for the summer months with as much ventilation as possible and another tent for the cooler months.
I am currently after advice for a cooler weather tent. Since this is my first serious tent I want to be able to walk in and touch what I am buying, this limits me to what I can buy in Brisbane (Not that much of a limitation) also my wife feels the cold and I would prefer a tent which was warmer in the cold but mat not be particularly useful in the summer months.
Current thinking is that I would like as much floor area as I can, a 4 season tent, have 2 vestibules and limit the packed weight to less than 3K. There seems to be a price point around $600 to $700 which would be nice to hit but this is not set in concrete. (Cheaper would be better)
Within these constraints I looked around the stores in Brisbane and produced the following list and would love some comments from people who have used any of these, or any advantages or disadvantages anyone can see.
Sierra Leone Ultra
Wilderness Equipment Second Arrow, (it has the smallest floor area of any in this list.)
Wilderness Equipment First Arrow with Siliconised Fly (but it is 3.4Kg)
MSR Hubba Hubba
Mont Krypton
Thanks in advance.
I live in Brisbane and I am tending towards having two tents, one for the summer months with as much ventilation as possible and another tent for the cooler months.
I am currently after advice for a cooler weather tent. Since this is my first serious tent I want to be able to walk in and touch what I am buying, this limits me to what I can buy in Brisbane (Not that much of a limitation) also my wife feels the cold and I would prefer a tent which was warmer in the cold but mat not be particularly useful in the summer months.
Current thinking is that I would like as much floor area as I can, a 4 season tent, have 2 vestibules and limit the packed weight to less than 3K. There seems to be a price point around $600 to $700 which would be nice to hit but this is not set in concrete. (Cheaper would be better)
Within these constraints I looked around the stores in Brisbane and produced the following list and would love some comments from people who have used any of these, or any advantages or disadvantages anyone can see.
Sierra Leone Ultra
Wilderness Equipment Second Arrow, (it has the smallest floor area of any in this list.)
Wilderness Equipment First Arrow with Siliconised Fly (but it is 3.4Kg)
MSR Hubba Hubba
Mont Krypton
Thanks in advance.