There are great options for both corded and cordless pool vacuum cleaners. Personally, I tend to prefer cordless ones simply because of ease of use. Cordless are also usually the better choice when you have a really large pool or one that's not a standard rectangular shape. Battery life, however, is one area in which corded wins out. When robot pool vacuums get full of debris, they usually don't just stall. Instead, they'll typically keep going but with a reduced water flow and suctioning capabilities. Basically, they'll keep moving but they won't really be doing their job to vacuum up more debris. Ideally, if you empty them out regularly, you shouldn't have to deal with emptying them out mid-cycle, unless you get just a ton of debris build up in your pool. I think smart mapping is definitely a feature that's well worth it. This allows robot pool vacuums to accurately learn the shape and size of your pool so that they can clean it all. It's especially helpful for pools that aren't standard shapes.
Having dealt with both corded and cordless robotic pool cleaners, I've found that it really depends on your pool size and how often you plan to use the cleaner. Corded models traditionally offer more power and continuous run-time, eliminating the frustration of a cleaner dying mid-job. On the flip side, cordless models remove the hassle of dealing with tangled cords and are superb for quick daily clean-ups. Personally, I lean towards corded for heavy-duty, thorough cleaning, especially if you have a larger pool. As per my experience, robotic pool cleaners do sometimes stall when their baskets are full, particularly if it’s a heavier leaf fall season. You might find yourself needing to empty the basket at least once during a cleaning cycle in these cases, or even more often if your pool is a popular hangout for leaves. When choosing a robotic cleaner, look for models with larger basket capacities; this can really make a difference in reducing interruptions. As for features, the usefulness of smart mapping and app connectivity depends on your lifestyle. If you're often away or like having precise control over cleaning patterns, these features are far from gimmicks. They provide real value by customizing the cleaning process to fit your schedule and pool’s shape. Remember, investing in a model that matches your specific needs always turns out more satisfying than just going for the most teched-out option.