I'm not the slimmest of people in the world with a bit of insulation around my middle so the heavily tailored tight fitting cycling clothing isn't the most flattering thing I can wear but with jackets it seems there's either something like:

A
Altura Night Vision EVO Jacket ... which are superb jackets but generally tend to be waterproof and get way too hot and sweaty and aren't very breathable but for me are a much nicer fit and not quite so in your "I'm a serious cyclist" look as they could just be an everyday high vis jacket

or something like
B
Castelli Perfetto Red Convertible
Which is far more breathable and softer material and also has the advantage of removable arms but is a much more tailored / tighter fit

Has anyone come across a jacket that looks and is tailored more like A but performs more like B ... ideally sub £100 or thereabouts ??

EDIT: I'm not bothered about it being waterproof but some wind resistance may be good but not essential.