Whatever floats your boat. I think the solid white "receptors" are sterile and bland....but I'm a tile guy and there are a multitude of different designs to be had with tile.

We got a corian shower pan and have tiled walls. The corian matches our floor tile- kind of a warm cement gray. Some people might not like it, but I really do, and I think the color match keeps it from looking like we cheaped out. So easy to clean and such a nice feel on the feet too. Oh, and because we had to get a custom pan, it was more expensive than a tile shower floor.

The only good shower pan ”inserts” are going to be the Kohler cast iron ones, or solid surface ones, like Corian or Swanstone. You're talking quite a bit of $$$ in both materials and labor both. Avoid the cheap acrylic ones, unless you like renovating again down the road.

@User Excellent information, thank you very much. We're less concerned about cost and more concerned about preventing water issues in the future as well as creating a preferred look. The cast iron option looks intriguing. Any additional maintenance issues to consider with cast iron?