I had read that the saxo pump could be quite light at times, not from everyone but the odd person. Im not sure what options you have for varying the steering weight of it which is why i opted for the mr-S one. It is a bit larger and the tank is fixed to the top of it, whereas the saxo one is separate so allows more variety for mounting/hiding out the way. But for what i was after the adjustablity of the toyota unit won me over.