Just starting to put in a new AGP, 21' 54" round. I'm trying to decide between the ultra inexpensive Intex CG-28669 or the more expensive, but seemingly more reliable Hayward Aquatrol. Does anyone have any experience with either of these? I'm ok with spending the money on the Hayward if it really is THAT much better. But you can't beat $99 for the Intex if it actually works. Thanks in advance.