Nev - couldn't disagree more regards comparable ride quality.
Free world as they say.
At least we agree black is the best colour for a 159 (oh hang on!!)
Simple test: How long/far can you drive without feeling the need for a break?
Brera: +400km. (You are refuelling before you feel the need to take a break.)
Feel relaxed and almost rested after a longhaul blast.
159: about 250km.
Seats are less comfortable, more wind noise, more tyre noise,
less planted in high winds. Also the VDC is butting in a lot more than in
the Brera. Mind you the 159 does have an opening sunroof.
A lot of the above could be a tyre issue, dropping from 18s to 17s but
it's not just my perception, it is also feedback from my passengers.
From my experience I wouldn't recommend a 159 over a Brera.
Probably the only benefit
The only real reason to have more than 2-doors is if you like playing taxi.