Thread: sleeping bag comparison…

Aight had a read of a pile of sleeping bag threads here. Looking for a second sleeping bag. Long story, bought a new kuiu 0 bag 12 months ago, wicked bag, but very much a winter bag for weight, packability and temp rating.
I’m in need of a bag for roar/spring hunting that packs small and is as light as possible.
Living in central Otago so want one that will be ok in tail end of the roar where below zero is very likely.
I was about to pull the trigger on a RAB Mythic 400 but have seen the Sea To Summit Spark SP3 popping up here and there. On paper they square up but I am wanting to know if anyone has hands on comparisons of them both? Is the RAB worth the larger price tag? Or if there is something as good worth considering that’s readily available in NZ?