It's fairly rare to notice signal "loss" on runs that short in residential use. I've ran unbalanced signals over 30+ feet numerous times. The signal will most often degrade due to the environment rather than the cable length. For example, if you run an unbalanced signal near a neon light transformer it will often pick up noise.
I would just pick up a cable from monoprice.com and see if it works for your needs with out added noise.