Toyotas do have reliable CVT transmissions. You are correct about the Nissans being unreliable. I would not choose the CVT because they are noisy. I have had two Corolla loaner cars and the CVT was made for a noisy cabin. When I passed cars on the freeway, the engine was the loudest I have heard in any mainstream economy car. However, reliability-wise they are good. I would avoid the 4 speed auto in the lower trims of the 2014-2016. I would be more concerned how the hundreds of rental car drivers drove your car. The thing is that it is impossible to know if they gunned it at every green light.