We have a kreepy crawly suction side that came with our pool. I don't know if other cleaners run into this problem, but it does tend to get stuck in certain areas. For this reason, I kinda have to be around, especially when it gets stuck near or above the water line and starts sucking air... then the pump looses its prime and well, its a pain in the butt. I think I may just hand vacumn the pool this year, its only a 16x34 and I dont have any leaf problems. On the pro side, they are very cheap and if you can get yours set up properly and it "likes" your pool shape then you could go for it.
I was also told the suction vibration is not too good for your pipes in the long term.