Just set my Dolphin Dynamic up and it has been running for about 30 minutes. It seems to be doing a great job. Much better cleaning than my old Polaris 380. I like the remote that lets you manually control where it goes, but it does take quite a while to get used to steering it as it is not obvious which end is the front - so I find I steer it the wrong way at times.

Have not changed the bag yet, but I think this may be a pain compared to the Polaris. The other thing I don't like is the need to take it out of the water when not being used. I kept my Polaris in the pool for 8 years with no harmful effects. Also I would run the polaris while I went swimming, as sometimes I would manually swim with it to spot clean. The Dolphin says you should not have it in the pool while you swim. Is that for fear of electric shocks? Has anyone used it while you are in the pool?