I've had several smokers over the years, although I have never had a pellet smoker.
I do however have a Lang & it is by far the best smoker I have ever used.
Yes you have to add a split of wood every hour or so, but it holds a steady temp & the food coming out of it has a better flavor than the other smokers I own. If cost is an issue, then the next best option, in my opinion is a 22.5
WSM. You can outfit it with a BBQ Guru & it will hold whatever temp you set it at until you run out of wood & charcoal. I have that setup too & it has ran 22 hours without adding any wood or charcoal, and you get a real wood/charcoal flavor.
Al