Considering switching to XLR cables,

I'll echo what others have said, it really depends on your gear and how it is implemented. I don't think XLR is inherently better than RCA in most cases. Unless you need a really long cable run which is where XLR is clearly better. But most people don't need anything like that.

You need to know if your DAC is truly balanced or not, and same with your preamp. Otherwise there is conversion involved which can be done well or poorly depending on the design. 

I've been enjoying the Veritas Cables Argentum R for a while, which is a silver RCA design. Recently I picked up the Argentum X which they say is a very similar design but in balanced form. In one of my systems I can't tell the difference when I switch between them. But in a different headphone based setup the XLR interconnects are much more enjoyable. I don't think that is related to this particular cable design, it's just that the DAC and headphone amp do best when operated fully balanced. 

If you do decide to try out a set of XLRs, make sure to buy something you can return if you don't like or hear a big enough improvement. I can vouch for Triode having a good policy like that, not sure about the others you mentioned. 

Be very wary of XLR<->RCA conversion.  XLR to RCA is often "ignore pin 3". RCA to XLR is often Live to pin2, Signal Ground to pin 1, GROUND PIN 3.  Thus the rest of your amplification is single ended as a balanced input signal bypasses the phase splitter!

XLR's true advantage is in eliminating common mode noise - the idea is that any noise from the environment affects the signal conductors equally and so cancel out.  Hence being ubiquitous for microphone cables where the signal is very small.

You can always try stiff from The Cable Company Library.

@salc 

IMO, your targeted cables are not commensurate with the high level gear you have. If I was a smart guy I guess I would have long ago tasted the quality cables I am now getting to. For a painful journey see my systems page.

I suggest Wywires Diamond, Snake River Signature, and Inakustic Air to match the level of your components. Buy used, take your time.

I’m so glad I have balanced components. Reduced my system noise considerably. Best of luck to you and good listening.

Agree with retiredaudioguy. It is not a matter of opinion, if equipment is implemented properly, XLR is always potentially better. It just depends if you are able to realize the benefit with your particular environment.

I'm assuming the ARC & Pass are both fully balanced circuits.

If you live in the middle of Manhattan with 100 different wifi networks within a stones throw of your audio system, XLR should definitely be both quieter noise-wise and louder signal-wise.  Win-win

If your system is in the middle of your 40 acre spread in South Dakota, you'll still get the signal boost, but any further gains are less likely.