Richard,
I went with and Intelliflo in June of last year when I built my pool. I also went with the Intellitouch system because of the Intelliflo. I move 40 GPM at under 600 watts. When I run my Cleaner it goes up to 70 gpm. When I want to make the spillway really move it goes to 100 gpm. When in the spa mode it is set for 100 GPM for spa or with the blower it is at 120 GPM. I stubbed for a solar but have not installed one yet, but when I do I will also program flow for that. What is great is the ability to tweak flow rates any time I want to. Power cost went through the roof this past year so I programmed for most efficient flow rates. I was shocked when I used a clamp on amp meter on my neighbors pump and saw how much power his was using compared to mine. I was less than 50% of the power for similar flow rates. I hesitate to quote the actual delta because pipes and plumbing are not the same. I feel very safe saying my power consumption is 50% lower than his for similar size pools. Get a clamp on amp meter and see what kind of current you are using now. When you slow down the flow rate the system is extremely efficient both in filtering quality and power consumption.

Back last Summer the 4x160 could be had for about 900.00. If you do not have the Intellitouch system the 4x160 is probably a better option as you loose most of the functionality of the full intelliflo without the intellitouch. I think the 4x160 does 4 settings vs intelliflo which has many. To be honest I could have used only 4 and been just fine.

I was recently asked if I had it to do all over again would I spend so much on the pump? Absolutely, I will recover my additional cost for the pump in a year with the power savings, so why not. The additional cost for the intellitouch system in 2 years. My pump has a 3 year warranty, maybe because I have all Pentair equipment but not sure. I thought the standard came with a 2 yr, but I am not 100% on that either. If you have any more Questions please PM me as I do not come here very often but would be happy to help.