Over the weekend I took the plunge and bought myself a pair of Assos longs to go ride on these cold winter mornings, and took them out for the first time this morning. I can only say that they are worth every cent I spent! It feels like you're floating in the air, not sitting on a bicycle seat, and not a hint of cold. Temperatures were warmer this morning, with a minimum of 4 degrees, so I'll put them to the true test tomorrow morning with temperatures expected to go below zero.
I'll definitely be buying more items of this make, as the savings allow.