I have the Groove which I have used with Shunyata Taipan, Virtual Dynamics Nite, Silent Source, TG Audio HSR and Moray James power cords. The differences were not that big. I like the Moray James best in my system.
I never had the original power cord. But I guess that doesnn't matter. I bought another phono stage which was supposed to be excellent. I sold it within a week. The Groove was much better and is still in my system.