I found Tracksat.com better than Lyngsat because the site has search option which makes it very easy to find any channel and it shows complete detail about on how many satellites this channel is available. Secondly, it is now much faster and they are updating the channels daily without any delay where as these features are not available on Lyngsat.
When there is any change in the chart, Lyngsat highlights the whole frequency whereas Tracksat highlights only the particular update channel, in which way it is easier to find about the change in the exact channel.