Couple of points to add-

I agree with Jim.Climbing the walls to the surface is pretty much a waste of time. I have my Dolphin set not to climb as I am much more interested in getting the bottom clean.
It still does climb somewhat,even up to my ladder, but it doesn't get stuck there.

As for the sales reps info on the Blue Diamond I would dispute two points.I believe the bag of the Dolphin does filter down to 2 microns, not 20.The Aquabot Turbo goes to 2 microns, and the Dolphin bag is much more substantial than the Aquabot's.

As far as the "smart processor" which causes the robot to randomly turn on the bottom of the pool, the Dolphin does this as well. I have witnessed it do this on many occasions. The Aquabot Turbo does not do this. It relies on wall climbing and then creeping along the water's edge to change it's direction.

Into my third year with the Dolphin-it has been trouble free and does an excellent job of cleaning my 20x40 pool.

I think the point of this thread is not that the Dolphin is a poor cleaner.As Carl said, when it worked it worked well.Any robot can break down.That is not the issue.The issue is the extremely poor service he has recieved from Smartpool. For that reason alone many would shy away from buying the Dolphin and I would agree with them.To spend that amount of money and have the unit fail after two years is dissapointing.Not being able to have it repaired is totally unacceptable.