Hi,
I would say the same as Mueller. Your side categories and top menus could use some work. You might consider hiring Michelle from 3dCart. I bet for a few $$'s she could customize it to your liking. She has helped us on three of our sites.
This shopping cart is very easy to work with. We spent 5+ years with Miva Merchant and fought it the whole time. We been treated with respect here and feel like part of the 3dCart family. Even my little brother Jimmy!
Regards,
Bill Fox
http://www.4filters.com