I find International F to be the best value for miles, since the tickets can cost up to $25K. International F to Europe is high as well - $16K on UA.
East Coast USA to West Coast Australia is a good value.
USA to South Africa is a good value.
If you go to Europe - open jaw and stop over allowed on CO - so that can provide good value.
Most people here on FT would never think of using EasyPass awards. Go with a partner then change latter if CO or UA opens.