Clive, as definatly go for a jrc bedchair mate, they are top quality.
I recently purchased the Trakker big snooze sleeping bag, which is on special at the moment for ?40 - its much better than the JRC 4 season which I bought a few weeks ago. I used it once and I was a bit cold, on a night which wasn't particularly chilly.
Also, it only has a zip on one side. When I am fishing I always like to face the water, so this meant that the zip was somtimes on the wrong side for getting out. The final straw was last weekend at wellford. I had a run at about 6am. I was awake and went to pull the sleeping bag open, but the zip was stuck. from my pulling I ripped the seam, I still couldn't open it so I tried to riggle out, but ended up tipping my bedchair backwards, on the floor tangled up in the bag and the chair. eventually got out and landed the fish though.
Bought the Trakker bag in the shop at Whelford, its got a double zip, its fleece lined, its bigger and its heavier (which to me would indicate its warmer.
Cheers mate, tight lines
Mike