In reply to John Burns:
I've had the Venom 220 for a good few years now after picking it up cheap (£30) when I was after a thin, light summer sleeping bag. It's been used in Europe, and in Scotland in Summer (haven't really been brave enough to try it in anything too cold) and was excellent.
First used in Poland on a 2 week trek and the small pack size was fantastic as I could fit it in a Podsacs XS Drybag, and was plenty warm enough. Have since used in Scotland for everything from DoE to multi-day bothy/camping trips in the Cairngorms with no problems - as long as you're careful you'll be fine not to nick the fabric.
Only criticisms are that mine has a bit of a tendency to drop feathers (but hopefully this has been rectified in newer models), and that the zip is only half length, which has only been an issue on really warm nights when I've wanted to be able to unzip it completely and use it as a blanket.