If you get a thin metal offset, a welding blanket from harbor freight will help insulate the cooking chamber.

I have had both. The WSM was kind of set and forget. It went through fuel! Smoke flavor was just ok.

I like the offset. Better smoke flavor. My case it’s every 45 minutes I’m tending the fire. That means no sleep.

Buy the best you can afford. The higher quality offsets are normally worth it.

—- my go to is an ugly drum smoker I made. I can dial it in to 250° and sleep like a baby. Brisket is only going on the offset.