Until now, I only played with the Joy-Cons attached to the Switch (good enough for mobile use), the Joy-Cons connected to the grip and the Joy-Cons unconnected. So far, I prefer the Joy-Cons connected to the grip.
This week I also got a third party charge grip (€13 with shipping, USB-C cable included) with longer and thicker handles... feels much better than the original. And the Joy-Cons get charged that way while playing.
Although I'm still very happy with the grip charge controller with the longer handles, I added a Switch Pro controller to my collection yesterday. Love it so far!
Since 7th gen all my consoles (and other devices connected to the TV) have to be black to be as unobtrusive as possible under the TV.
The controllers on the other hand can be a bit more colorful: