Parasound JC1s better using balanced inputs?

I am looking for a preamp for my JC1s and want to know if the amps have a noticable improvement is sound using the xlr inputs? I like a couple of tube preamps that do not have balanced outputs (VTL 2.5, cj pv14L). Would I be better off choosing one that does have xlrs(Bat 3i, Belles 21a)?