I love
Rosalind - it is so beautiful, and the name of a friend. I don't like the -mund part of
Rosamund, though do appreciate its medieval history connections (
Rosamund Clifford).
Rosamond is a much prettier spelling imho, and makes the name a real rival to
Rosalind. In fact, I can see that
Rosamond might be more appealing than
Rosalind, since it's less commonly encountered. It was
Elizabeth Taylor's middle name and I love that combo.
I can only think of
Rosa as an alternative to
Ros, though hardly as naturally occurring. Not too fond of
Rosie.
Rosamond Helen is a combo I like - better than
Rosamond Helena though that's pretty too.