The Furman is the way to go. Excellent noise reduction, and surge protection.
Most UPS units generate a great deal of AC line noise, not to mention don't have the surge protection Furman has.
The one area where you might want an upgrade is in voltage regulation. I use a Furman voltage regulator in front of my Furman Elite. It keeps the voltage constantly within a 7V range.
If you are worried about your voltage sagging, get a meter like this one and keep an eye on it during the day and as you play music:
Also, pay attention to the N-E voltage, which should be 2V or less. If it rises during playing you may need an electrician.