I personally had a eshopps at one point and I can definitely relate about the u-tube issue. I never had mine fail but there were a couple times where if I hadn't intervened the system would fail. I cant speak to whether or not one is superior. The benefit of the cpr is that in the event of a siphon loss the aqualifter pump would be a fail-safe that could restore the siphon where as the eshopps would not.
