I have a custom Corian shower base that I like a lot.

www.grifform.com

I also have a custom Corian shower base (and shower walls), and I'm very happy with this solution to grout issues.

FMZ, do you know if one would have to get a Corian shower base if they're going to get Corian shower walls? I know there are other solid surface pans available. Also, with Corian shower walls can they build a ledge into it (vs niches)? Thanks!

I'm pretty sure that you can use any shower base with Corian shower walls, but I'm not an expert. I don't have a ledge, but I don't see why it can't be done with Corian. I don't have a niche either, we installed grab bars with incorporated shelves instead. If I had enough room in the shower, I would have wanted a ledge. I'm sure that Joseph Corlett can answer your Corian questions.

"FMZ, do you know if one would have to get a Corian shower base if they're going to get Corian shower walls?:

You don't have to, but why wouldn't you want to?

" I know there are other solid surface pans available. Also, with Corian shower walls can they build a ledge into it (vs niches)?"

You can build nearly anything with solid surface.