B/Ds are expensive. Are they that much better? I dunno. It works really well but I HAVE to take the ladder out each time. They lead you to believe you can just toss it in any pool and 1 hour later, it's clean, no matter the shape.

This is misleading: They really are only designed for rectangular pools--all their claims of "superior" software are B/S. Luckily, I have a rectangular pool. Otherwise, you need to use the remote as a joystick--what's the use of THAT?

If your pool is NOT rectangular, do not get a Blue Diamond. You will be disappointed. But if it is rectangular, you'll be delighted by it.