What is the benefit of balanced xlr cables

There is no real benefit unless you require 10m long ICs or your components do not have RCA sockets, IMO...

... and the XLR ICs are usually much more expensive!

When the tool is really build ballanced inside there is a easily difference to be heard.

Audioquest uses the same prices for xlr and rca!

When the tool is really build ballanced inside there is a easily difference to be heard.

I would suggest that the same could be said for RCA electronics... whatever that tool/component is...

Perhaps Audioquest RCA ICs could be better, especially for the prices being suggested... whatever those prices may be...

When the tool is really build ballanced inside there is a easily difference to be heard.

For me it depends on the RCA or XLR electronics and the quality of the RCA or XLR ICs not whether it is RCA or XLR... that's how I hear it :)

Unfortunately, XLR electronics remove 2nd order harmonics as part of the XLR noise filtering/cancelling process, which our ears like, but leaves the 3rd order harmonics in place including the noise, which our ears do not like... :)

I don't say it also works better, but in most cases it does when it is build real balanced inside.