Do you mean the thoughts on the two puffy jackets I brought ?? Or do you mean the Lost Park Parka (the big Kifaru one) that’s synthetic vs bringing a down jacket?
The LPP has been hands down the warmest/most durable puffy we’ve ever ran. It is synthetic and it’s pretty robust so a little heavy but worth its weight. Half zip over a full zip to keep in heat and be more cozy. I brought the small and light BP to hike in and buck wind while hiking. You can hike in the LPP if it’s close to 0°. But it’s a key glassing piece to keep ya warm and protect from the wind.