Right now I am looking to put on muscle but when I do some cutting, I will be looking to trim down and become more lean/tone. I am just trying to figure out what diet would be best for this. I don't know if I should try something like keto for this or if I need to continue to eat carbs to sustain my muscle gains.
I don't think there is a set diet but there are foods you want to avoid and foods you want to eat more of. Some examples of food you want to include to toning is lean chicken breast, dark turkey meat, lean fish like salmon, eggs, lean beef, cottage cheese, spinach, kale, peppers, almonds, brown rice, and berries. The idea is to focus more on lean proteins and cut back on carbs.
I agree with the post above, there is no one diet for this but rather foods that are better vs worse. For toning, in most cases you want to cut out carbs almost completely. This will remove excess water weight.
Any diet that focuses more on protein and lean foods like vegetables, beans, ect. will be best. You want to limit your carbs and avoid sugar unless it is in the form of fresh fruit and only limit it to a few pieces a day.
Focus on foods like fish, meat, eggs, nuts or energy bars. These will not only help you to repair and restore the body but help with toning and defining. Be sure to avoid nuts that are high in salt. It is best to get unsalted varieties.