I have to agree with the advice, but you have to figure out your needs.
If I could only have one cooker in the backyard it would be a ceramic. Because you can smoke, grill, bake or make pizza's all on the BGE or Primo. You will love pizza off the BGE, I know we do. also I take mine to about 500 plus for steaks, man do the ribeye's turn out so good.
So if it is just for smoking, the WSM's are great. However, a ceramic will give you several cooking options, but they are more expensive.
Best of luck.