@salbahis: Ako suggestion is just bite the bullet and get the 430EXII. I regret getting the Nissin di622 Mark I kay it's now misfiring often labi na 3rd party pud ako lens. It was misfiring already when I had a Canon prime lens but not as often as with a 3rd party. Surprisingly, it didn't misfire when I used manual focus lenses. I'm guessing dili na magsinabot protocols na gigamit sa 3rd party lens ug Nissin.
I'm now selling the Nissin di622 to an officemate despite my insistence he buys a Canon. Ang naka nindot pud sa mga OEM lenses is naa distance indicator to help you gauge unsa kalayo abot suga at certain ISO/aperture combinations.