i have both andersen double hung low e glass which condensates at lower frame at sill and at mid where both frames meet seal is perfect and pella casements low e glass condensates around window neither has drafts. andersen faces south and pella west. i am on slab if makes any difference. windows are new and only in winter time

This time of the year after we close things up there is a lot of moisture stored from the summer months. Most of our condensation complaints come in Nov and Dec. Causes are primarily too much humidity in the home caused by a variety of things.
When your outdoor temp is in the 20-40 degree range recommended humidity levels should be in the 40% range for a max and in the 10-20 degree range 30-35% and approximately 5% lower for each 10 degree drop in outside temp.