I have been watching this thread with some interest since I recently purchased a flex. Common sense told me that forced rotation would be better. I own a PC and it will stop if the pressure is to great or the pad is wet. With the flex it never stops, even at slow speed. I am NOT a professional, only a do-ti-yourself kind of guy, so my opinion is only that "my opinion". I have not experienced that feeling of having to chase the flex around or being led by it. I find it a pure joy to use. I still use the makita rotary for deep scratches because it will correct really fast, but it is not as much fun to use as the flex. If you get a chance try the different machines and buy the one you like. I am on another forum for hand engravers (guns and jewelry) and there is a device being sold that is way more expensive than any or even all of the machines put together. There is a section on the forum where owners of the device post their location and invite others to try it out. Only after taking someone up on their offer and loving the device did I buy it. It would be nice if admin would create a spot so members that are willing, could post the machines that they would allow others to try. The forum family seems only to willing to share their knowledge with each other. Sometimes you can feel the tension in a post because of the individuals passion for their techniques, products and comitment to a company. Remember it is not a contest and you can't see expressions or body language in a post so don't read too much into them.
Mark
I like this idea! I'd love to try out some DAs before purchasing the "right one" for me!