Acrylic or fibreglass gives you instant gratification...and the most bang for the buck on day 1. By day 2, as the gel coat starts to wear down, that doesn't look so good.
If you want 5 to 8 good years, OK on fibreglass or acrylic. If you want 8 to 12 good years, go enameled steel tub, and if you want 20 years, go cast iron or porcelain-on-resin ( Americast).
Ceramic tile walls will cost more out the door, last and be good looking a lot longer.
Rental property is a different equation, because you have a situation where you could install top dollar stuff, and they trash it in a year. This is the perennial dilemma for landlords, and if you figure out the answer, let me know!