I say this as someone who has had nothing but Korean cars for the past 6 years: Get the CX-5, particularly a non-turbo model. Much much better choice between the two.
Now if you’re leasing? That’s a different story. In that case go with whichever one is the better deal cause you’ll be within the warranty period anyways.
You did not break your transmission by accidentally going into manual mode and bouncing off the rev limiter for a bit. The car has multiple computers focused purely on making sure the engine and transmission don’t damage themselves, even if the driver does something stupid.