First Time Digital SLR buyer
I am not a great fan of SLT technology, preferring optical viewfinders over electronic VFs. But your choice, the A57, seems like a great all around camera for still and video photography. As a Nikon owner, I do not like that brand's implementation of video, but love its still imaging. If you decide to get the Sony, I think you'll be happy. You have handled the camera, right? It's important that you do so, before purchase. You have to feel comfortable with the camera you purchase.