Which is better?

Is the crucial grooved bearing, dif-e-yo konkave bearing, or center track bearing better? I am not really going to buy any of these bearings , I am just curious.

Each is a fine bearing.
Personally, I find flat bearings to be more than sufficient in what we need them to do.

They all are as good as each other. It’s just your preferences that decide that. They all have a different feel to them, that’s basically the difference.

My world famous statement right here for your viewing pleasure.

A bearing is a bearing is a bearing is a bearing.

None are better. You just may prefer one over the other.

I prefer a beefcake. But that’s just me.

i prefer the kk i like it alot