Degritter offers decent power with 340W. That's about right imo, though ideally you'd like to vary the applied power. It also includes a Sweep feature which is a positive. Sweep helps distribute cavitation bubbles throughout the tank, otherwise they tend to concentrate at the transducer points. Record grooves tend to be in the outer thirds of a tank, left and right.
It also accomodates cleaning fluids and includes a filter, though they don't specify particle size trapped by the filter. Imo, ultrasonic cleaning is more effective with a surfactant.
While Degritter touts it as a feature I believe that its operation only at 120kHz may be too high. There is a correlation between ultrasonic frequency with cavitation bubble size and impact, and those correlate with particle size removal.