Short answer: Yes.
If nothing else, it will add an incredible feel and comfort when you hit the ball correctly.
Read Mikeler's thread on multis where he describes the standard by which his multis are judged.
And if you are not a string breaker, it will likely last longer than what you play with now. Especially if you combine it with with a high quality poly like 4G in the crosses it will feel even better and you will not have to straighten strings anymore because they snap back into place.
Your mileage may vary, batteries not included.