I used to own a Sim Moon 650d DAC ~$8K… they offered a separate power supply for $8K. With some reticent I bought it. It was well worth it. The noise floor dropped dramatically, which allowed the details to increase and bass was enhanced.
Personally, I would go with the one manufactured for your unit. It was made to be a complement, you can be sure if they are selling it at that price, it is made to be perfect.