I have used Joomla since the early days and have experienced a wide variety of product quality and support. I can say that regardless of paid or free, this is one of those products that most Joomla webmasters and developers should have in their toolbox. I migrated a Joomla 1.5 site to (eventually) 2.5.8. After the initial install, the diagnostics timed out and I opened a support call. Sander was on it very quickly, and created a patch for the extremely high error counts we had on the site. After applying his patch, this tool fixed over 47,000 assets in a only minutes. (That patch is now included in the current version.) I can say, great product and great support Sander. Thank you for saving us countless hours of work!