I don't want to even admit how many dollars I've spent on small packable jackets.... my favorite is a mountain hardwear ghost whisper hooded. I've worn one out as has my wife's, even with near daily use it took time for them to start loosing down and tearing. Can often find them for 140 to 180 dollars in terrible last year colors from the various outlet places.
My favorite synthetic was a mountain hardwear compressor, it packed as small as the ghost whisper was minimally heavier and did better when wet. I've had 5 since 2015, my first 3 took over 5 years to wear out being worn under rain gear about 6 months a year. My favorite jacket so far.