Hello everybody. I'm new here. I am a graphic designer. My brother has a side business doing primarily portrait photography. I am looking to get him a good photoshop plugin to aid him in his work. He has colorefex 4 (not sure if that's spelled right). I thought this might be a good place to get some advice on what would be a good option. He is running photoshop cs5. I'm not sure if it matters, but he uses a Canon DSLR. I'd like to stay $100 or less, but am negotiable. Thanks in advance for any help.