I have had a Neutrino for a few years now, and had one of the last 'Made in Sheffield' jackets. I think the quality of the jacket has gone rapidly downhill since the manufacturing was moved to the far east. I saw an 'identical' jacket to mine not too long ago and did not even realise it was the same! The filling and finish of the jacket was to a much lesser quality and I certainly would not have invested in a 'newer' one. I also have issues with the front zip - it always seems to catch on the internal zip barrier which is slowly being destroyed as I tear it back out.
However, in general it is an exceptional down jacket. Warmth to weight ratio I have never found better. I wore it this winter for my alpine climbing trip, really testing it to its limits and it provided the warmth I needed, whilst still packing small enough and being light enough to be popped in my rucksack. It is also a nice light jacket to take to the crag on a summers evening.
I would definitely recommend this jacket, but would suggest you look around a bit first as quality does seem to vary.
Steve
Here is a picture of me last week at the Col de Montets in the Alps with my jacket.
http://www.facebook.com/photo.php?pid=6299783&id=606620182