how would you compare the insulation in...
how would you compare the insulation in the scarab pant to the titan?
The Titan pants are going to be substantially warmer than the Scarab pants. I have the Scarab pants - think of a softer-faced version of the Gore-Tex Pro Shell (this is a Gore-Tex Softshell pant) with a light layer of fleece bonded to the inside. They are definitely very nice, but I personally think that they are only a little bit warmer than a standard pair of gore-tex hardshell pants. The Titan pants on the other hand have Primaloft insulation sandwiched between a Gore-Tex shell and an inner lining. These are going to be exceptionally warm - perhaps even too warm in temperatures above 0* F for most people. While comfort at different temperatures is going to differ from person to person, I've skiied comfortably in the Scarab pants with the wind chill factor around 0* F with a warm baselayer (I was using a powerstretch tight).