Great info as always

Looking to buy a flash unit myself for my D650.

After reading a lot about the choices I'm going to buy me a Nissin Di866 Mark II (Euro 209) as it's only 30 Euros more expensive then the Yongnuo YN565 (Euro 179) and it has more features, is more powerful and is more rugged.

This is a great source when looking for a flash unit.
http://speedlights.net/flash-for-canon-ettl-speedlites/

All the best.