I've been working with Intersoft's WebGrid.NET over the past couple weeks and blogging the experience. I've integrated the component with our business objects along with our UI customization component. We can now maintain column visibility, layout order and column size customizations by user across sessions. I'm very happy working with their support staff even though I'm currently a 'trial period' user. We will be purchasing the control shortly for our development staff. Their code samples and tutorials that ship with their product do a fine job of illustrating product usage and the online documention is excellent. My favorite page is their “WebGrid.NET Various Samples” page - neat, clean, concise.