Sync is good for imported parts from other system and Non-sheet metal parts.
I don't use sync because my focus is sheet metal.
The area Sync really falls down is flat pattern controls and editing the gage of a material (Gage = Thickness and Bend radius)
Also w/ frames you have to make a choice early on. The Frame sections have to be either sync or ordered. I chose ordered.
Within a single part, you can do ordered work on top of Sync, but you can't do Sync work on top of Ordered. If this was the other way around I would be VERY motivated to use Sync.
I need the "basics" of my models to be ordered. Since I can't use sync on top of ordered, I don't use it at all.
From a conceptual standpoint, ordered maintains relations to creation sketches. In sync, sketches are used to start part creation, but once the part exist, the sketch removed.
