I have on. Just did some trout yesterday. 2 issues I have. 1- constant heat control, I set it at 140 and it heats to 155 or 160. Then the burner shuts off until the temp drops to about 130. Get no smoke until it kicks back on, and that can take a while. Makes it difficult to control the amount of smoke you want. 2- The pellet tray is kind of thin and can warp on you. This results in inefficient burn of pellets. I have had to remove it a few times and flatten out the bottom. Kind of a pain in the middle of the smoke process.
Other than those two items its been OK for the price. Got it as a fathers day gift a couple years ago. Easy to maintain, clean and store in the she during winter. I find that if I smoke on a day with not much else going on, I can keep an eye on it and it will turn out an OK product.
That said, if I was going to replace it, I would probably not get another. Good luck with your decision.