This is a great hot tub for the money.  Had it for a month now and no problems everything worked as described and purchased.   I recommend hooking unit up with 220 voltage.  I temporarily did 110V and it struggles to maintain temp when jets are on.  With 220 v, temperature is fine with jets on.  220 voltage hooking up wires to terminal strip difficult because of limited room on control unit.  

I would rate it 5 stars if panel for controls had a brighter and larger LCD screen.  Buttons could be larger also.  One more wish list item;  would be seating in hot tub was 2" deeper.