Lovewoolwrote a review of Rab Neutrino Endurance Down Jacket - Men's on September 16, 2015
Familiarity: I've used it once or twice and have initial impressions
Fit: True to size
The original Rab Neutrino has been a VERY popular puffy for years. This updated version addressed BOTH of my major complaints about the old jacket.
Rab has improved the zippers by using the bigger-toothed YKK VISLON zippers which move smoothly and quickly. My biggest complaint on the older version was the finicky old zippers which were difficult to start and which wouldn't zip up quickly with a single pull. Rab's competitors (like Mountain Equipment) started using the better zippers two years ago. Rab has finally followed suit! The pocket zippers are also updated!
Secondly, the fit has improved! (At least for me). I'm 5'8 with a 40-inch chest wearing a medium. The older style model felt SNUG under my armpits and felt restricting with activity. This had to do with the fabric pattern and how the arms were stitched to the torso. My new Rab no longer feels snug under my armpits when I'm moving! Awesome!
Rab claims that the new jacket also has more down (25 more grams, just shy of one ounce). I don't really notice this. My last gripe is that Pertex Endurance isn't the most breathable fabric, but given the weight and cost considerations, and given that this puffy really is a belay puffy (not really for strenuous sustained aerobic output), I understand that the use of Endurance is good compromise.
I haven't used it long, but I know how it will perform based on the old Neutrino. All my complaints about the old Neutrino have now been fixed! I'm stoked!