Over the years I have tried 3-4 of the pump type Kreepy Krauly or others.
Last year I bought an electric Maytronics Dolphin Supreme M4. This thing is incredible, it cleans easily, will pickup leaves and just about any dirt in the pool. Best thing I ever bought for my pool and it work perfectly from day 1.
No need to run my pump more than 6 hours a day now.

http://dolphinpoolrobot.com/en/resid...ers#supreme-m4