Im looking to purchase my first flash unit and looking for help and suggestions. I currently own a canon 60d, 17-85mm ,50mm and the 75-300mm. I mostly do travel and outdoor photography and I'm not 100 percent sure how i want to us the flash yet, I just know I hate the pop up flash. My price point is right about 275, so that would be enough for the 430ex II new. And I was looking for thoughts and opinions on if looking at older used ex flashes would be useful. Want to get the best bang for the buck but also get I flash i will not out grow to fast. Thanks for the imput