I want to buy a down jacket for the winter. I have looked at several models and I like the Marmot Zeus as well as the LLBean UL 850. Both run about $175ish. I have a Marmot Precip to use as a shell for water repellancy. My use will be for short (2-3 night) backpacking trips. I do get cold rather easily so please keep that in mind. Any recommendations or ideas. Thanks in advance.