I think its worth looking at the extended costs, such as replacement of cell, and controller repairs.
I dont have much knowledge about Circupool or compupool, except that there have reports here on TFP of quality problems, but that was a few years ago. They may have gotten those ironed out. Replacement cells seem to be reasonably priced as far as I can tell. Dont know about the controller parts.
Pentair works well and is simple to use, (I have one) but output % are in increments of 20 unless you have a easy touch or similar controller to go along with it. This makes accomplishing output of the SWG and pump run times more of a challenge if one is interested in "dialing in" the FC as per TFP recommended levles.
All of the basics controls are integrated into the cell, which makes a replacement cell considerably more costly than their competitors.
Hayward is a good product with proven track record, and as Jblizzle says, some of the repairs are well documented and can be inexpensive (particularly the current limiter). Cell replacement is reasonably priced as is the Circuit Board if replacement is needed.
Autopilot and jandy, I no nothing about at all.
From what Ive read, Zodiac is predominantly going "green" across their product lines. I dont trust any of the 'green' stuff, so Im not objective about it.
For larger pools which need a 60K cell, the options are more limited.