I do find this an interesting tpoic - just one of those things you'll never be able to predict, though.
we (as every parent does) thought long and hard over the dds' names, and we are happy with htem, so that is all that counts.
someone earlier on this thread said that no-one ever says to your face that they dislike your dc's name - well they do in my family!
My uncle hates dd2's name 9"what have you called her that for? it's horrible") and hates one of her midle names too. He prefers her second middle name, which is the only on of the three that we would neer consider calling her (she is Beatrice Cecily Caroline).
My step-children hate the name Beatrice too, and weren't slow to tell us (well, to be fair, they didn't, but their mother did!) but as I said earlier, who cares? We like it, so we used it.
as for nice names beginning with I, U or x:
Iona
Imogen
Isolde
Xanthe
any good?