I had the same question you did but, Thanks to this thread and its contributers I made the choice to keep the Porter Cable. For the price its hard to beat, for the cost of the Flex or Rupes I now have 2 machines that cover many bases. I don't think that either the flex or rupes alone can do every thing this combo can. But that doesn't mean I don't want Flex3401 anymore :-) and I just can't see selling the PC for a loss.