I don't have experience with those tires so I can't say. Both brands have gotten pretty good feedback. I think overall though the Coopers have gotten a little higher praise but I would certainly try the Nitto's for the right price. I'm just saying be careful buying the cheapies out there you've never heard of to save a couple bucks.
Tires I've run and thought were well worth the money... Cooper At3's, Bridgestone Revo's, Firestone AT's & Michelin LTX's. I pretty much buy whatever I can get the best deal on at the time (though they do need to look decent as well). I bought my Coopers for around $450-$500 out the door... so they were a no brainer with the reviews they've gotten. Best wishes!