Tile vs. 1-piec fiberglass shower installs?

[Loc R.]

So the 4-plex I have under contract is a mess. 2 of the bathrooms are goners. So, my question to you other landlords is:

Your thoughts on the initial & long term costs vs. durability of a 1-piece fiberglass shower/tub insert vs. tile the shower surround + tub?

Let's assume I want to keep this 4-plex for a long time. Also, does your mindset change if I want to flip this building?