Try 'em out and see for yourself. of course, your source or preamp has to be likewise outfitted with xlr outputs.
Usually if truly balanced the back drop will be darker or quieter... less noise. There might also be a touch cleaner sound presented given the balanced approach. other's will say this with more technical insight.
If you feel such a change from SE to XLR will provide you night and day diffs, I doubt that notion will prevail. Albeit, it is likely going to be a noticeable one... again, if truly balanced.