Yeah seems like for whatever reason people kinda cap their synthetic jackets at ~130 grams of synthetic.
Black diamond Belay
Integral Designs Dolomitti
I currently have a micropuff (~65g) a OD research (75g), and a OD down jacket... I often have to layer all three lol... starting in like October.
You must get cold, like me.
This data really should be spreadsheeted - gotta keep Ben on his toes.