I would just go with the XLR. You'll feel better, have more peace of mind about your choice, and be more confident that you went with the very best available option in the end. And XLR will sound better, to boot. Happy listening.
I run a pair of IC cables from RCA variable output on my amp to the XLR input on my Legacy Calibre XD speakers. This runs the woofers only off the internal speaker amps while the midrange and tweeters are run by speaker cables from my tube amp. Currently I have some budget cables that are rca to a double female rca adapter then a shorter rca to XLR Male cable into the speakers.
Looking at getting new cables for that and was wondering what the best cable configuration would be, or if it matters?
Rca cable to an FRCA/MXLR adapter at the speaker.
Xlr cable with FRCA/MXLR adapter at the amp.
Find or have made a pair of cables with MRCA at amp end and MXLR at speaker.
Or: it doesn't matter.