long time lurker, just registered with this great forum. I have a pc 7424 that is about 12 years old and still works just as good as the same day I bought it. I recently bought a boat that has some oxidation, not terrible but bad enough, I don't think the PC is the right tool for this job. I know a rotary with wool pads will get it but I have no experience with a rotary. I was thinking maybe a Flex 3401 will have enough power to do the job on my boat but is still safe enough to use on my truck. My question is, does the 3401 have that much more power / more effective than the PC 7424 ? I know the rotary will be cheaper (Dewalt 849x ~$180) but will be hesitant about using a rotary on my truck whereas the flex might be safer>...Thoughts?