KLEI versus [...]

So KLEI connectors are certainly marketed as innovative products, and yes their merits as described are valid. However now that other manufacturers are employing the principles of minimal mass contact pin geometries and very low contact resistances with even solid silver used, at least copper as base metal, hollow RCA pins, etc, I wonder if they are any more the connectors to choose for the simplest approach to best performance.

Now, comparing the sound quality differences between connectors isn’t even trivial in high-end audio.

Would like to hear opinions on KLEI, versus WBT, versus Oyaide, etc, etc.
The largest differential here is certainly price, but let’s forget that.