you'd better use the XLR to XLR cable. unbalanced jacks are for instruments and using XLR to 1/4 will not improve quality, and even likely will decrease it (or at least I've been in situation when this happened to me).
if the only thing you've got is balanced 1/4 input, get XLR to balanced 1/4 dongle.
p.s. unbalanced jack has two contacts, balanced one uses three. google for "trs balanced unbalanced" for more details.