Hello,
I've been using nopCommerce since v 2.00 and I love, great job guys!
Have you considered switching from Telerik Grids in admin panel, to jqGrid?
http://www.trirand.com/blog/
It's a jQuery component that works great with asp.net mvc. I have written some "wrappers" for it, so setting it up in view may look quite similar to current Telerik definition. It supports JSON async queries, editing etc.
Among some great features, one of the best is filter toolbar:
see demos at http://trirand.com/blog/jqgrid/jqgrid.html under "new in version 3.5"->"integrated search toolbar".
I think that it might be implemented in "Manage products" tab, so that working with products might be a little easier and faster.
What do you think about this?
Chris