I still use my WSM for those days when I have nothing better to do than sit in my back yard. The SI is the way to go with those long overnight smokes or when you have other things to do around the house. I can tell the difference in taste between the two. I get a much truer smoke flavor in the SI and can tell the difference between the different types of wood I use. I get requests from family and friends for my pork butts. They tell me mine are much better than what they get in the local BBQ joints .. and I tend to agree. I’m still working on perfecting my brisket but I think I am getting close. Even though everyone always looked forward to my cooks on the Weber, I never got such high praise with the cooks on my WSM.