If you are deciding what to buy, then that goes in the Purchase Consultation topic.
If you are trying to see which is better overall, I'd have to say that it really depends on what type you want to use the most. If you are an Attack fanatic, use Flash, which is top tier in Attack. If you are a blader who uses Stamina and Defense often, use Duo.
If you are trying to see which is better overall, I'd have to say that it really depends on what type you want to use the most. If you are an Attack fanatic, use Flash, which is top tier in Attack. If you are a blader who uses Stamina and Defense often, use Duo.