I own a JBJ it is fairly quiet, I would say less then the sound of most window based AC's. Power use is noticeable but was acceptable for me.
If you don't mind a suggestion I will tell you the one thing I changed that has made me disconnect my chiller. I switched from an internal return pump to an external. I now use the internal pump on my water changing station and I don't have to heat the water.
If you still want to get a chiller and want used send me a PM if your interested n a used one.