Important!: Tire size and manufacturer?

Either ither you'll be happy. I have my own opinion but everyone runs 275/45's, including myself on my rcsb when it was 4/6. They rubbed a but, but not bad, my 255/50 dont rub at 4/6 on my cc.

Really comes down to what tire you want and what price is better
 
Under $200 and as close to $150 as possible. Unless they are on a big sale I doubt anything under $150 will be worthwhile.
 
Not sure about the mounting and balance, no stores near me so I never even look at that.
 
Kumho ecsta st/x? He said same price as above. Never been a fan of kumho. Thoughts? The last linked price is good for me.
 
Buddy has the Nitto 420s on a Chevy crew in the 275/55 and he said mine ride MUCH better than his do. The only thing he likes about the Nittos is the tread pattern. We both have about 20K miles on them and mine look brand new, his not so much.
 
My dad had those stz on his old boosted cc nbs, he had a good 40,000MILES on them before the truck was stolen. Tony';s right, they do last. Out of the choices you listed above, that be my pick