Recognize when it's better to use medium format or 35mm, depending on where and what you are shooting. Medium format typically provides much better image quality due to the larger negative, especially when making prints, the larger the prints the better. And your RB67 is great if you anticipate wanting to shoot different films (e.g., color, b&w) without finishing rolls. 35mm is better in situations where weight of the equipment can be a factor (hiking, etc.), less frequent roll changeouts are an advantage, and longer telephoto shots are anticipated.