I have a Stoker. While I love it, as many have already stated, I do not use it much. But when it comes in handy, it is really worth it.
What prompted me to get it was my daughter's graduation from college. We planned a party after the ceremony and I was making pulled pork. The ceremony lasted longer than I had anticipated and I was squirming in my seat wondering how the meat was doing.
Today, with my Stoker, I can check the meat temperature and alter the pit temperature from anywhere in the world. If I had had it at my daughter's graduation, I would have just pulled out my cell phone, checked the temperature and if it was getting too done, just lower the pit temperature. I would have been more relaxed during her special day.