I cannot recommend a Dolphin. A lot of people here have had problems with them over the last year, myself included. They actually replaced my Dolphin with a new one because I refused to accept their explanations. My unit would not work in my pool, and they gave me a lot of BS explanations, like pH had to be 6.9, and FC really low, etc, etc. Funny, the replacement worked the way the first one had when new...
I now have it and a Blue Diamond. I use the BD despite its drawbacks, like I have to remove my ladder or it gets stuck under it. Still the BD does a great job and the bags are just as good as Dolphin's, but far, FAR easier to clean. I never need to put it in the washing machine.
But unless you have a rectangular pool, the BD may have troubles with the shape of the pool and you'll have to use the remote to direct it, another drawback. Since my pool is rectangular, it's not a problem. Plus the BD is super-fast--2- 3 hours to do the pool including wall-climbing--the Dolphin takes 8 hours. That means I can put the BD in almost any time and be done in 2-3 hours. The Dolphin is better going in at night or when the pool won't be used that day.
People with Aquabots love them. Belts are easily accessible and they don't seem to have the drawbacks of either the Dolphin or the BD.
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