I know nothing of these particular jackets, but my waxed cotton Barbour and Filson jackets are both quite breathable. While the Filson jacket is designed to be heavy and stiff, the Barbour is neither.
My Filson jacket is 21 years old and my Barbour is over 25. So while they may both have been “pricey” when new, their daily cost or cost per wear is minuscule as they both have years if not decades of life left in them. IMHO, it’s worth paying for quality.