The TigerShark robotic pool cleaners come in 3 different models; the Standard, the Plus and the QC. These robotic pool cleaners are basically the same, they have similar functions and all perform equally. However, the difference is seen in the extra features of the robots. The TigerShark Standard is the most basic of the 3 and comes with only primary features for getting the job done, no high-end or extra convenient features. The TigerShark Plus is only a step above the Standard in that it comes with remote control, which is the only way it differs from the Standard. The TigerShark QC only has an added 90 minutes “Quick clean” cleaning mode, but it doesn’t have a remote control. Note that both the Standard and the Plus have only a standard 3-hour cleaning mode.