Well said...There is some trickery that can be done for added relays but if you are going to go to that extreme, then the IntelliTouch is a better choice.
IAquaLink will work with some Pentair equipment but it would kind of be like running PC software on a Mac...it can be done but often doesn't work well, has glitches and requires several workarounds as compared to a program that was written and designed for use on a Mac.
If you go with Pentair, stick with their automation and if you go with Jandy, use their automation. Neither is a bad choice and both are pretty equal all things considered. I've really been impressed with the Versa-Plumb system Jandy is offering and their integrated heater bypass on their heaters. With that said, I'd take a Raypak 406 over the MasterTemp or Jandy heater any day (and wish I would have).