The pool and spa panel comes with valve actuators, if you don't need them then the single body model will be cheaper. You want to specify the easy touch model with the included IC 40 as well, since it will come pre-wired for the salt cell including an integrated salt cell power supply.
Additionally since you are getting the easy touch, I would get it with the IC60 model. It will only be $25 or so more, and the salt cell will last 50% longer since you will be running it at a lower power level. The easy touch allows finer percentage control of the SWG than you would have with a stand alone salt cell.