Originally Posted by
scottsosmith
I have a 40F Phoenix ( 11.5 oz) and a 0F Incubator (25.7 oz). I use the Phoenix down to temps in the mid 40s, and it works quite well. I do not use any extra insulation at the feet (sit pad, jacket, etc). The light weight and appropriate warmth is at these temperatures and higher is hard to beat.
For temps in the low 40s and below, I use the Phoenix. Much more weight, but the added warmth is worth it.
It seems as though you are looking to add an underquilt because your 20F Yeti is too warm in the summer. If this is the primary motivation, then the a 40F Phoneix makes a great deal of sense.
Lastly, In repsonse to you" if you could only have one...?" question, I object. It brings me too much anxiety to consider limiting myself to just one!!!!
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