CX-5 vs CX-50 suspension

:
2021 CX-9 Sig
:
2021 CX-5 GT
It is not fair to compare tranquility between your two vehicles. Newer Mazdas are quieter than older ones. I have three Mazdas. I know that when I drive them. Night and day difference if I compare my '17 CX5 vs. '14 Mazda3. '16 Mazda6 in between. Both IRS.

Handling. I think the difference shows at the limit. e.g. emergency avoidance situation.
Not day to day driving.

Maybe, but I hope I am never in those situations! The sound is not just wind, but creaks and other noises. Without question, the new cars are better built.

One thing I will say is that the steering feel of the 2017 Mazda 3 is great and better than the new car. The new car feels too good and damped if you know what I mean.
 
:
Southwest Ohio
:
'19 CX-5 diesel
... Handling. I think the difference shows at the limit. e.g. emergency avoidance situation.
Not day to day driving....
I think that is exactly why Mazda is going with this torsion beam vs IRS multi-link. 99% of cx50 buyers aren't going to ever push it hard enough to know the difference.