Should I upgrade to XLR interconnects?

I recently purchased a Marantz SA-11S3 SACD player to pair with my Marantz PM-11S3 integrated amp.   The SA-11S3 has balanced outs and the PM-11S3 has balanced ins.  Currently I am using RCA interconnects.  Is there any benefit to upgrading to balanced for these particular units? I do not want to drop big bucks on new cables if the benefits are minimal.