Post workout, I would use something faster, to spike insulin and help shuttle protein to storage. It doesn't have to be 100% fast carbs though. You can combine your carb sources. Maybe start at 50% fast/50% slower. All in all, it's going to come down to how you respond. Some people can handle fast carbs a lot better. Usually it's people with an ecto body type. For an endo, fast carbs are more likely to cause the person to get fat. For someone who store body fat more easily, it might be a better idea to rely on more slow carbs. IMO, either one is going to work at shuttling nutrients.