Thanks for reaching out! I hope I make the right decision.Only you can decide what works best for you under your circumstances.
I don't do "truck stuff" very often so I don't mind that I lose a bit of bed space,
I like the T-slot rails and near waterproof-ness of my Retrax XR, I like the fact that you can't just cut through it to get to what's inside the bed.
But it is heavier (doubt that matters on a 7000lbs vehicle), it does take up about a foot in the front of the bed and it is definitely more expensive, so, again, you have to decide for yourself what is important to you.