Gryffles, Welcome to AudioCircle and RWA....
Are you still looking for input or did you get some leads on the interwebs?
I have a Sig 57 with DAC as well.
your question is so open that it is akin to saying "I want to make dinner with vegetables for under $40. Any suggestions?" The options are endless–of course. So, if you have narrowed down your preferences and needs, clarify your question for feedback here on AC.