Chose between V11 and V10. The first option is ten thousand dollars more expensive. A little bit more power, an electronic display, and a little bit more time (maybe the V11 will be sufficient for really large residences). I looked at examples from the real world. V10 loses quite a bit. I figured that would be plenty. To say the least, content. Various advantages: This product performs really well on both hard floors and carpet. Powerful. Excellent filtering. A great number of baits. Not cumbersome. Extremely well considered and appropriate. The details determine the level of quality. Having certain negative aspects At full power, it takes little more than 10 minutes for the battery to completely empty itself.