They’re decent transmissions.

but that being said, they tend to wear out faster then regular automatics, require frequent service and they usually just don’t last much over 200,000 miles if even that.

These transmissions require very frequent fluid chances. If you don’t change the fluid frequently enough, they will develop a terrible bearing whine. And if you drive aggressively they will develop belt slippage and ultimately destroy it self.

personally, I wouldn’t buy a CVT and would try to find a regular conversional automatic.
Although the CVTs are decent nowadays. 

I agree with @Dan. I should also add that no one knows a lot about the reliability yet since they are pretty new. 

Jury is still out on those, but personally if you have a choice and want something that will last longer go for the manual, then a regular automatic over those;  although driving a manual day in/day out in stop-and-go traffic is not for everyone and can get old fast (I personally don’t mind).  Even regarding the new 8-speed AT for FWD applications, the long term reliability is not known yet but I would rather gamble on that than the CVT.  Whichever you get, be on top of the ATF fluid change intervals and don’t drive aggressively if you want it to last as long as possible.

It's still 2021 ...

The Toyota Corolla CVT has been proven to be very reliable over the last few years. Other than that, a lot of the newer designs like the 8 speed automatic are not proven yet. The hybrid CVT if thats what you are refering to by E-CVT has been proven over decades that its a reliable transmission. Toyota is good at making transmissions after the kinks are worked out. You also need to take care of them with fluid changes so don't believe any of the life-time sealed fluid nonsense.