Has anyone here used Sigma Grid for JavaScript-based data grids? It was the only grid I could find that would allow fast data entry and use of the keypad, but before we spend a lot of development time I wanted to learn about the community's experience with it.
(Note: we need dozens of fast, sortable, and editable grids that can be used with the arrow keys and minimal mouse use ... otherwise we'd just pop in an ASP.NET control)