Although expensive, someone like Raven will do you well....
...Channel master used Raven dishes. You can tell them by the ribbing on the back and comparing installation manuals.
The sequence of company ownership of these ribbed dishes was
1. Channel Master
2. Andrew
3. Raven
4. Skyware Global
Channel Master were the original manufacturers, subsequently taken over by Andrew, then by Raven and now currently as Skyware Global.