"Some of my competition claim that the switchless motors have issues."
My statement/question to the consumer at that point would be, "are they trying to sell you motors over there? or a hot tub?" because here I can offer you some great hot tub options, if you have 20 minutes I'd love to show you what we offer, let me ask, what are looking to get out of a spa, what hurts? what type of jets do you like?, ohh you've never owned one? whats changed?
change the approach....nobody cares about motors, they want a good deal on a nice spa from a reputable dealer that will fit their needs/budget and they also want to buy from someone they like..getting into an argument with the guy across the street about motors helps NONE of this process along...give it a try :-)