I use a 7 bbl JVNW system that was originally installed in 1997. I'm very happy with it with the exception of the shadowless manway doors on the unitanks and brite tanks. There is a support piece that's part of the door which bends over time and must be cut apart and rewelded periodically (or in some cases replaced altogether for about $200). Other than that it's a great system. I'm up in Lake Placid and you're welcome to come check it out if you want to see how the system works in action.
Head Beer Guy