Have a question regarding pool pattern memory. Is there any robotic cleaner out there that really remembers the cleaning pattern of your pool? I have a Dolphin S50 for my AGP, had for 3 seasons now and it seems that every time I put it in , it's a new adventure for it? It does clean the pool in the 2 hours of its program, but on some occasions , it will sit in the middle and go forward then backwards a few times then eventually head towards the far wall. It doesn't get everything , but after 27 years of vacuuming I think it's great. Just reflecting, getting ready to get rid of pool. Wife isn't feeling too good and she is the one who uses it the most.