Dietary Supplement Recommendation for Strength Training?

Trying to put on more upper body muscle and was taking NO Explode as a supplement. However, I think that has run its course because I have "hit a wall." I heard that NO Shotgun is supposed to be similar to NO Explode but supposedly with more ingredients. Any recommendations regarding what supplement to take? I current work out at XSport Fitness in Chicago. Also have been drinking A LOT of protein shakes as well. I am 6'1.5", 26 years old, bout 200 lbs, 34 inch waist, and trying to get up to 210 lbs at most.