Christian de Looper/BGR I've found Ecovacs' high-end robotic vacuums to be at the top of the mountain for a few years now, with helpful new features added almost twice per year. For the Ecovacs Deebot X11 OmniCyclone , the upgrade came in the form of faster charging and higher suction power, along with a bag-free dustbin built into the dock. Now, Ecovacs is building on that base with the new Deebot X12 OmniCyclone, which looks much like the last model, but adds features to more effectively clean off stubborn, stuck-on stains. To be clear, robovac manufacturers, including Ecovacs, have been putting more emphasis on mopping features in general recently. For a few years now, roller mops have offered the best mopping, with newer models getting more and more pressure power to push down on those tough stains. So, how does the X12 OmniCyclone improve on mopping even further? Well, it does so with a new system that actually sprays water onto dried spots before mopping them.…