The reason why I suggested cables is that you indicated the Dali's were satisfying in the bigger room. That means they may have potential in the new room with a little work. Plus, there are no perfect speakers out there, and your new speaker may have the same issues. You mentioned alterations in speaker placement, but I would try without any toe-in and spaced as wide as you can get them if that has not been done already. Also, try inverting the phase of the speaker cables at the speaker end. This can be the cause of your problem, too.
I think Cardas is a pretty warm cable, perhaps at the expense of detail and bottom end extension. I do not know about Acoustic Zen. There is plenty of info on the cables I mentioned. There are cables out there that provide a full midrange without compromising other aspects. My initial impression is that Jade Audio fits that bill, but you would only know by trying.
Or perhaps it is time for a change. As for your choices, you will get opinions all over the map.
I think Cardas is a pretty warm cable, perhaps at the expense of detail and bottom end extension. I do not know about Acoustic Zen. There is plenty of info on the cables I mentioned. There are cables out there that provide a full midrange without compromising other aspects. My initial impression is that Jade Audio fits that bill, but you would only know by trying.
Or perhaps it is time for a change. As for your choices, you will get opinions all over the map.