Does anyone have any thoughts on the Dolphin Triton Plus Robotic Cleaner?

I wanted to purchase one for my 18' x 36' vinyl pool and also to use it in the off-season for my indoor gunite pool that is 16' x 46' x with 6' deep end and wanted to know if it was a good brand or would do a good job. It seemed to get pretty good review on most of the sites that I located it.