CSVI Pro will make your life easier, especially when you work with a lot of product management. It saves time as well as product management now can be manage offline in Spreadsheet program like Excel
The support even better, i purchase several commercial extension and csvi pro is the top leader in support service. Every problem post will have feedback within 1-5 hours, Roland explain a lot of detail clearly, he know what he did.
Hopefully this excellence support and product continues. I recommend this extension to all Virtuemart Developer. A must have !