...now m confused between 320 and 430exII.
I have used neither (but I use the 430ex), but looks to me like both are quite good. The 320 may start feeling underpowered if you get into bouncing the flash.
I hardly video shoot...
??Sorry I don't understand!
Body: 550d (x2).
Lens: efs 10-22, ef 24-70/2.8 L II, ef 85/1.8, ef 17-40/4L.
Light: 580ex II, 430ex, Prolite 'trilite' (x2), Elinchrom D-lite4 (x2), Skyport.
Bag: TTP (belt system & slingomatic 30) & CCCS vest.