For me, it has been the plunge cut saw and guiderail. At first I was going to say that the MFT needed to be added to the saw as a category (Saw, Guiderail, MFT, DC), but then I thought about the last month or so and I realized I have been using my saw and guiderail off the MFT and on my breakdown cutting table quite a bit. This is one tough poll. Interestingly, I really love my Festool routers but no one else is singling them out either. I think that is because they are in a bit more generic category. They may be more elegant than the others, but other than DC it is hard to really stand out in a way that says it changes the way you work. Now that I have said that, someone will come away from the Advanced Router class next week and be blown away with what they learn.