What we need is Paramo to make cycle kit....
If you do want a proper windproof fronted jacket, I use an Endura Windtex jacket when it's colder, though I'd call it a winter jacket, as I never go to anything more. Windproof front, but not the back so it breathes better than something that's fully windproof. Also has big pit zips for extra ventilation. Really don't understand the obsession with Assos stuff on here and the unwillingness to admit that you can get kit which is at least 90% as good for half the money.
I've got a few bits of Castelli, and it's some of the worst made kit I've seen, even though I like the design. Not got any of their jackets though - what's the quality like?