I've used this during the autumn months this year and so far I'm pleased with it. Very light, very small, you can't feel it in the bag and can even put it in a pocket and won't bother you much. It is a bit on the small side, usually will only cover one person confortably, but two can snuggle together and sort of make it work. :) It has stood up to a few gusts of wind without inverting - I haven't put it through any really strong winds but it's good to know it's not so flimsy as to break at the first sign of trouble.
It still is very light and I can't really make myself believe it will hold up well to the test of time, but so far it's done its job so I'll just have to give it 5 stars. If it ever lets me down I'll come back and adjust it.