I took a double pluq (4 layers) plus pad down to 32 in a damp, raining weekend. With that and a military CWS system I woke up in the morning thinking, "I'm too comfortable to get up." First time in my life I've woken up when camping and wasn't hurting or cold.

I'll admit that I got lucky with the pitch as it was the first time using a pluq and it was done in the dark.