I would be interested in knowing what tilts the balance in favor of Clack in your evaluation. I hope you are not being influenced by some of the bad information posted earlier in this thread. I am specifically referring to the following points
--that the 7000 is overkill (bigger internal passages are always better if the price is the same or less, the Clack 1.25 in valve is about $100 more expensive than the Clack 1" and the Clack 1" sells for $40 more than the 7000)
--that the 7000 uses excessive water because of the variable brining feature (it doesn't have a variable brining feature so this comment is pure ####)
--that there is a difference in the ability of a DIYer to repair the valve because you need a screwdriver and pliers for the Fleck 7000 but you don't need those tools for a Clack (it is true that the Clack circuit board snaps out while the Fleck board uses screws but on the other hand there is a risk you will break the board or the snap fasteners with the Clack)
--that the timer is separate on the Fleck (both the Fleck 7000 and the Clack have one circuit board and all electronic components are on that board on both heads).