We looked very deeply into a few CCK to display our many products and shirt for our tshirt printing web site. We are so happy our choice was sobipro. It is a very robust database that we have set up and since we deal with adding new/changing products all the time we wanted to make it simple for updating and sobipro has given us that.
The support is great and you get to talk to the developer directly. We also like that the extension could be customized to fit our needs with room for expansion in the future. I can't stress enough how wonderful this product is. Very happy for the past year we have been using it.