I already told them, I am not trying to be on HGTV so I'm looking for durability and not high end. 

Standing seam metal roofs are durable but not indestructable - wind damage that might just tear off some shingle tabs can peel a metal roof like a banana if it's not fastened properly.

I know, as history has well shown, when the currency itself is the item of question, the "safe" answer is ASSETS who have; Durability, Convertibility, and PRODUCTION.

If it makes sense with your numbers, I would go metal for durability.

so, you need to consider how durable (or how fragile) the property is...How responsible is the tenant?

Yes, goal is less frequent maintenance, longer durability and lower insurance premiums (haven’t gotten that quote yet but they’re increasingly picky about roofing age and materials in the past couple years).

Account Closed, if your target renters are college students, you want durable, sturdy, economical, clean and safe.

It is durable and easy to clean.

It's durable and probably won't absorb the pee smell.

That is something only a local surveyor can help with based on the physical location of existing monumentation, occupation by durable improvements and legal descriptions of adjacent parcels.