The unit are a 600 sq ft 1 bd & a 750 2 bd for reference.Anyone have experience with either from installation cost, to durability, effectiveness perspective? 

Vinyl IMO - a lot more durable.

For my clients always create not on a living trust, but a pour over will, Medical Power of Attorney, and Durable Power of Attorney (see below).  

Is there a more durable floor the OP could use?

I have experience in institutional bathrooms and high end residential bathrooms, but not for the balance in cost and durability that a rental unit requires.

If you are living there a long time, here are some common things people over look: 1. window/door package2. waterproofing details3. building materials4. air sealing/ indoor air quality, energy performance requirements5. sound reduction6. site challenges / site advantagesThe average person chooses more square feet, and more expensive finishes over performance and durability. 

We have had plenty of experience with long term rentals, but are wet behind the ears on this.Here are some things that I need help to resolve:Which furnishing textiles are best for durability ?

The first was a duplex and I thought landlords might appreciate the durability.

You find it in 1950s era flooring tile (usually the 9x9 ones), concrete/asbestos siding (durable but brittle), piping insulation, sometimes that 1920s insulbrick siding, as an additive to some old plasters, and probably half a dozen other places I have forgotten.

I generally get my countertops glazed. very durable, but it takes a full day, with a recommended additional 72 hrs for the smell to dissipate.