You have several options beyond Fleischmann's unsalted.  I use a product
called Hain Margarine that is made from Safflower and Soy oil.  I found it at
a health food store.  I think you can check for availability in your area by
calling 1-800-434-HAIN.

There is another product derived from Canola oil that is available in many
health food stores.  It contains soy protein though, if that is a problem for
you.  (Sorry the name escapes me right now.)

Mother's margarine is made from cottonseed oil, and if you get the Kosher for
Passover formulation, it is free of both soy and milk derivatives.  During
non-Passover times it has soy lecithin in it.  You can find this at Kosher
markets and in Supermarkets serving large Jewish populations.

Lynda