The Ultrasonic is awesome for removing case lube, but not damaging carefully worked cases. For this reason alone, I feel its a mandatory addition to my bench. I never felt I could fully remove the case lube from my cases, but with the Ultrasonic it's a non issue. It definitely doesn't clean cases like a Vibratory or Rotary Tumbler though (talking brightness), so I tend to use it just for case lube and small parts as mentioned above.
The Rotary is great for cleaning cases, and in fact, is better than anything I've used, but you have to plan time for the drying cycle!
