When its gets colder I use BMW Phase change top and bottom and when really cold I use Icebreaker & Phase change together (I never bother with manufacturer's thermal linings). Sorted
Pesonally I use helly Hansen leggings and tops. They keep me warm in the winter and cool in the summer, also when you are touring just wash them in the shower and they will be dry in the morning ready for another day. No seams and you don't have to wear bundies. (I swear by them and have converted loads of mates and there wifey's too )
If you live by a designer outlet village, they always have a shop in there so even cheaper
HTH