The Plus, as you say, is simply with lube strip, whether GII or Contour. I can't say I have a preference - as a child of the Sixties I would have shaved often with the GII and moved onto the Contour. The GII echoes the angle of a DE, the Contour is an effortless, if unadventurous, shave. Both shave closely. If I have to do a cart-shave, I tend to go for the Contour - I have more handles and the time factor favours a pivot head.