Ugh, the Hardees burgers are absolutely nothing to write home about. The chain used to make *awesome* fried chicken and biscuits, but it's nowhere near as good as it used to be. Maybe the store in my plaza is just especially skeezy, I don't know, but about the only thing I go there for these days is the ham biscuit, and only at least an hour prior to the lunch turnover.
At BK (I was an employee maaaany years ago), the secret to getting a decent burger is to ask for it Fresh Off the Broiler. You have to wait an extra five minutes or so, but you won't get a burger that's been sitting in a steamer for up to half an hour, let alone dried out on the hot slide.