If you want tile, I recommend:
Exquisite Designs Kitchen and Bath Inc.
Anthony Pagan- owner
(786) 298-1320
He's done two for us- we are most happy with the finished product.
We had the tile set closely and an acrylic additive added to the grout mix. Seals the grout all the way through- no scrubbing ever needed.
One shower is now three years old- we use it daily. Grout looks brand new.