With my old vacuum, I didn’t have a docking system ... The most expensive model by $50, the Shark Stratos Cordless Vacuum, wins the award for strongest suction of any Shark cordless stick.

The Shark Matrix RV2310AE is a self-emptying robot vacuum that not only returns to its base station to recharge, but also to unload its contents. The base station can hold up to 30 days’ worth ...