I am looking to purchase my first under quilt. Two specific models I am looking at is the KAQ Jarbidge River UQ or the HG Phoenix 40 (add 2oz overstuff). I am looking for something to take me from April-October. The average lows hover around the low 40's (why I would add overstuff) for the coldest months. Obviously it can drop and does drop below 40 and also slighting above.
I love the price of the Jarbidge, but am worried that it will not pack down small enough to fit in my pack (REI Flash 45). Besides packability what are the pro's/con's of synthetic vs down and is the down worth the extra $77 between the two quilts?