Thank you Danpik,
It sounds like you have had really good luck with yours. I was eyeing up the RayPak 105,000 but buying it through a plumbing store with their markup + install pushed them out of the running. I spoke Hayward and they said as long as licensed gas fitter/plumber installed warranty would be honored, so I could buy online and save a bit.
My solar works great when the sun shines but alas I live on the "wet" coast and we could go days without sun. I'm basically just looking for something to work with the solar.
Cheers,
R