Rear Storage … SuperATV or Polaris?

I am going to buy a rear storage box for my 2012 800S LE after riding on a few trips using multiple bags, coolers, etc used for storing items. I am going to order either the SuperATV rear cargo box for $189.95 …
Polaris RZR Rear Cargo Box : Polaris : RZR S 800 : RZR S Accessories

or I am going to buy the Polaris Lock and Ride Cargo Box for $249.99 …
RZR 570, 800, S & 4 Lock & Ride Cargo Box | Polaris RZR Store

Here is my ride with the rear cage supports which limits my options …

For those of you who have one of these or both, which one do you prefer? SuperATV is an Indiana-based company and I have been very satisfied with their products/service. I don’t much care for the locking latch that I can see in their pictures but I think I can make that better.