recently picked up the rapha winter jersey on ebay on the cheap.
this thing is awesome. warm in 30s when layered, but comfortable with open vents and just a short sleeve base at 50 degrees.
windproof front panels and a couple of chest vents.
the fit is absolutely perfect...fits like a jersey, but thicker like a track jacket. front sits right at waist and back drops enough to cover what needs covering, but not excessive. doesn't bunch up at all.
love it.