Well, I think I'd only recommend the protector if they got the mattress too, since it's made to fit it. I would recommend the mattress, so far :) We had a quality waterproof mattress cover on our last mattress and this one is very similar. Except that it's designed to fit perfectly :)
I love the branding of T&N, this is where a lot of companies lack. The story of how the company was founded stood out to me as well as the price for the quality of the product.
It shipped quickly and I got it with no issues. The mattress was exactly as I'd hoped it would be, and after the second night I was sleeping better than I have in years and most of my pain was gone by the fourth night. The cost was definitely lower than buying from a regular store!