I have an Aquabot Supreme that is probably at least 5 years old by now. Have never had any problems with it, and only ever replaced the power supply. Just wondering if the newer models from Maytronics are worth the upgrade. I feel like my bot gets stuck in my deep-end a lot. I have an 18x38 grecian with a 8 foot deep end. Or maybe replacing the treads and brushes and giving a little refresh is the way to go. It would be nice to have a Dolphin with the schedules, and some remote control/automation. But I am more concerned if the cleaning patterns are that much better with the newer models from Maytronics than my current bot.