Take a step back for a sec......
Now just hold on a darn minute!
You've got some wide and varied bags there yet before you part with the hard earned cash and regret it later, ask yourself a few questions. If you went into a half decent camping shop, they should all ask you things like this and more to ensure you get what you need..
- whats the highest priority? budget, size, quality or performance?
- are you gonna keep it and use it loads or use once on trip and the throw it in the loft for ever more?
- down is great for lightweight and insulation; but no use at all when wet or damp! (remember they get damp with sweat if you use them in a too hot country!)
- if you want to keep the size down coz, your going where the nights are still warm as well, do you really need a sleeping bag? why not use a cotton sleeping bag liner?
Of course, if you are happy go alternative, I've used this stuff for years and it's fantastic!!! clothing and sleeping!!
http://www.buffalosystems.co.uk/ssmain.htm
The other half, who insists on conventional has the Karrimor Travellor 700 or 900 sleeping bag. Great bags!