My reason for going with the 6040 is twofold. First, as I mentioned earlier, I have a lot of respect for the name. I have always had good luck with anything Makita. Also, I tend to look at what commercial users purchase, because I know what kind of use commercial tools get, and I see a ton of contractors and other commercial types using Makita..
Secondly, as I dont know any professional detailers personally, I had to do my research online. After reading a ton of info and reviews, I got interested in the 6040 due to its dual purpose role. Being able to use it as a dual action buffer or a forced circular rotary allows me to learn how to properly use both processes. And the price, $230 shipped, seemed to me to be a bargain compared to the other high end brands out there. This combined with the fact that I dont intend to do this professionally convinced me that the Makita was my best bang for the buck.
My original question stemmed from the fact that I was curious why there didnt seem to be a ton of 6040 users out there. Didnt mean to cause an arguement. So far I am very happy with my purchase.