I have owned 2 Regens, many Jitterbugs, USB disrupter, Wyred Recovery, Intona and the Mutec 3+usb.
Once I heard the Intona, I sold the Regens that I had thought was the greatest even used them with a high quality Linear power supply.
The Disrupter can be purchased without the power supply. It was a surprise to me that the power supply was not needed. Easy way to test is to unplug the power supply if its still passes the signal the power supply is not needed.
The best for sound quality in my opinion is the Mutec 3+usb. Followed by the Intona.
The best bang for the buck might be the Disrupter.