I have several pieces of lawn maintenance equipment that have to stay parked
outdoors.

What is the best kind of tarp to use as a cover? By this, I mean durable
and resistant to sun rot.

I've been using blue el cheapos that Home Depot, Lowes, and Walwart sell.
They fall apart after about 60 days or so.

There are silver, green, etc ones. Which is best? Or, should I spring for
a canvas tarp???