I used a Polk S30 for a week and then bought a Wharfedale EVO 4C as a center, it was a huuuuuge improvement.
The 4C is pretty big but being a 3 way speaker it sound great and it has the same walnut finish as my Lintons
Since I mostly watch TV by myself, and sit in the sweet spot, I decided to forgo the center and just use phantom center. Music sounds better because the Lintons are better than the polk s35, and i don’t find a big difference in vocal clarity