In reply to Si dH:
Hi si
ive got a phantac jacket, havent ever had a filo so cant really offer a comparison to it, i bought the the phantac to replace a rab down jacket which had lasted me over 10 years so if i get the same amount of wear out of it i will be very pleased.
The phantac is a very warm jacket around the body but for some reason i find the sleeves cold around the elbow.
The jacket is close fitting, im a 45 inch chest and find the xl snug, certainly couldnt wear it over a waterproof as a belay jacket, i find it great for a camping jacket. Hope this helps