I have a Memphis, MAK, Traeger, and Blazn and cannot tell a difference in the smoke taste on the food coming off either of them. I have them 1) because I can
2) they each serve different purposes for me 3) and they were all bought at different times for different reasons.
Traeger - didn't know about any other pellet grills at the time and stumbled across Traeger, tested one, and bought a bigger model
Memphis - was concerned about temp swings on Traeger because I didn't know any better, watched a performance review, and bought it because of its tight temps
MAK- thought Memphis was too big for small cooks and bought it after performance reviews
Blazn - all 3 other grills were down for different reasons and got a great deal on a used model.
Bottom line as others have noted, if you want the taste of thick white bellowing smoke, there isn't a pellet grill out there to my knowledge that will replicate that. I have read quite a few stories though of folks who thought they did, didn't like their pellet smoker at first, and then have come to the realization after using it for months that the flavor profile is better for them than what they used to like. It all comes down to individual taste buds.