LKS 004 or monarchyM24 dac?

I am currently using an idsd dac via usb playing ripped files from my computer and am due for an upgrade. After having conversations with two techs, I narrowed I down to 2: The LKS which was recommended by Ric Schultz, or a used Monarchy Audio M24, which was recommended by Stephen Sank.  Both modify these units.  Any thoughts regarding the sonic differences between the 2 would be appreciated.