I guess I'm looking for the best of both worlds and I know I can't have a fully insulated jacket, that's also fully waterproof at the same time... I think my best option would be a waterproof/windproof jacket that can be pocketed/taken off if the weather picks up a bit
But do you want a rain jacket, or a jacket to keep you warm?
The only thing that comes close to both and functions is a softshell with zips, but it won't keep you dry forever.
In UK rain i wouldn't be out without a proper rain jacket.
I ride with an arcteryx alpha FL or variant of it. I don't like to be wet.