The standard Chromecast is a small box of wet shit compared to Chromecast with Google TV for the reasons Braveheart mentions.
My small complaint is how sensitive the remote is so if you're watching something else and press any button on that remote, the TV automatically switches the AV input to the one the Chromecast is connected to.
The whole thing is great though. It gives me access to a bunch of apps I don't have native to the TV that I use (Disney +, NFL Game Pass and a couple of FTA TV ones) plus the apps for Netflix, ABC iView, SBS on Demand, Stan etc. are better than the native one on the TV.