The balanced outs will definitely give you better performance than the RCAs, although how much you'll notice will depend on how easily you hear changes in your system. It is not a "OMG, it takes it to a whole new level" kind of difference, but a subtle improvement in clarity.
Whether the DIN output will be better than the balanced outs will depend on the quality of the cable you can find with a DIN option. I compared an Audience AU24 DIN-RCA cable (into a Neutrik RCA-XLR adaptor into my balanced preamp) against Au24 XLR interconnects and found the performance of the DIN output to be better. Changing that to an Audience Conductor DIN-RCA cable, the Au24 XLR inteconnects performed better.
