We have around 16000 SKUs and a slow magento store although we use excellent hosting. The following needs to be fixed 1. Compilation is not working 2. Flat Catalog is not working 3. Nitrogento - caching software- is not working properly - we saw issues with users seeing different person's carts 4. We need to refactor templates as we have unnecessary cycles on our homepage http://www.rackspace.com/knowledge_center/index.php/How_do_I_optimize_Magento If you are interested please send me a quote.