I would stick with a smoker and learn how to use it. Al.ost seems like you are trying to catch lightning in a bottle with your shotgun approach. Once you master one smoker, then move on. But I am not sure if you learn how to cook consistent BBQ if you are changing cookers, techniques, et al. When something new is winning.
Hopefully you understand that I am giving constructive criticism. New smokers are awesome, but much like wagyu, if you (not you personally) dont know how to cook a brisket, I wouldn't be wasting my money on a high end product. So if your new pit is a can, stick with it until you are consistent. Don't switch because you don't hit immediately.
And you know you can always reach out to me if you have questions. I may be semi-retired, but it doesn't make me forget how to cook.