Intex Salt System on an inground pool?

[PoolDoc]

The consensus is that the AutoPilot Pool Pilot or Digital Nano series, or the Hayward AquaRite / Goldline systems are preferable.

You should get the largest unit you can afford and turn it down, since SWCG life is a direct function of 'ON' time. On average, a unit that operates 1000 hours per year will last 1/2 as long as unit that operates 500 hours per year, but system cost does NOT double, as output doubles.

[regardie]

Bumping my really old thread.

So I never got around to doing anything about this and with a summer at home starting up, I had a few more questions.

So the Intex is definitely a no go. What about the smaller Hayward's like the Salt & swim 3C which says it's good for inground pools up to 30,000 gallons, which I believe would double the size of my pool.
There doesn't seem to be much info here about them.

Thoughts anyone?