"Sunday is bill paying day at our house, and I was happy to pay the Visa bill for my alternating twin tank design water softener. You said it would be at my house (just outside Detroit) in 72 hours and sure enough, in 48 hours it was there in my garage. Once I discovered where the brine supply line and purge line hooked up to, I was up and away. The system has cycled twice since it was installed and works just like the advertisement stated. Not everything on the Web works perfectly, but this experience really did work out perfectly and we are very satisfied with the product and support of you and your firm. Thanks, again (I'm in soft water once again)."