hifiman,
I am using SR cords that are not inexpensive, but a good friend of mine whom has had a MW5400ES for years in his fantastic sounding system recommended a Cullen or PS Audio AC-10/12, stating that they were both open-sounding cords on his MW ps. Be careful of counterfeits on the latter.
The Cerious or CPT cords might be worth consideration as well.
Best to you hifiman,
Dave