I did a workshop on Plantmetric with Rockwell and was happy with the setting up. But I think cost makes it a hard product to get installed. I believe there is only one customer in Australia using it locally here. Also had a look at Wonderware's DTAnalyst, again easy to set up and brilliant web reporting, and with the next version it will provide line efficiencies.
We have been using Plantmetrics from Rockwell for about 6 months now. Mostly good experience, some bugs, but seem to worked out now. We are now using the data to target problem areas. Generally, seems to be a good product.