Everybody has their own favourite source of information for sailing weather information. If you would like yours added to the SYC weather menu item, please contact the SYC web master.
Weather data sources
Many of the different weather web sites just put different "visualisations" on the same sources of weather data. To ensure you are getting a "second opinion", it is worth checking the data source used by your two favourite weather web sites and check that they are different. Otherwise that "second opinion" may not be providing you with a truly second opinion.