I've been shooting as a hobbyist for years and have never used a flash. I don't like the feel of most flash photography (lighting dark scenes), so I've never bothered with it. To be clear, I know absolutely nothing about using a flash. Zero. That said, I've come to realize that a flash for my 5D2 used for fill flash to light subjects in sunny outdoor nature shoots would greatly improve my results, so I'm planning on picking up a speedlight for this purpose specifically. I have no expectations to use it other scenarios, but who knows. I assume I can get by with the 430 EX II, but could I even play it cheap and go with the Is there any need for a flash diffuser? Any advice is appreciated.