This is a fantastic component. It's easy to use and coped with large numbers of products without any problem. I had an issue over a very large csv file and the developer helped me via gmail and googlechat. He took the time to go through my data and make sure everything was correct. He helped me to combine my two csvs into one upload, explained all the component options and was really happy to help. He was patient, polite and very, very helpful
I now have a happy client whose 40k products are loaded up in a matter of minutes. The categories link across to the products and after my tutorial with Giang, I feel ready to tackle even larger, more complex sites.
I can't recommend this product highly enough. I've used other 'import' products and this is by far the easiest and the support is FANTASTIC!