Your brand choice in pellets affects the smoke flavor more than brand of grills I believe. The Yoder ideally has a better smoke flow through the smoker due to the firepit on the side rather than in the middle like most others. The Yoder seemed to be more of a pellet hog than my other pellet smokers too, and more pellets burned should mean more smoke flavor. Someone mentioned the temperature part, this is true, but since a pellet smoker has an induced air flow it cooks faster at a given temperature due to better heat transfer. The best temperature tends to vary a bit between smokers.
XL Big Green Egg, Weber Performer Platinum, WSM 22.5"