Sleeping systems - bags, pads, matts, liners

PS That bag has also been used in warmer climes too. The thing with warm-ish bags in hot weather is that:

• if it's really hot, you don't need a bag anyway
  
• if it's a little hot, you can just take off clothes, and or unzip the bag
  
  

In my mind, bags rated warmer than 0 degrees are either for:

• people who don't like taking their clothes off
  
• people who don't like sleeping in a bag with the zipper undone (with or without clothes, as you will!)
  
• extremely weight-conscious climbers/tourers
  
  

Also, final point, people either sleep hot or cold, and your choice of bag should reflect this.

The Rab Quantum 250?

On the Rab website it's rated as comfortable down to -2 degrees which is perhaps a little ambitious.

Unfortunately I don't have enough experience to know whether I sleep hot or cold.

Thanks for the advice.