Chaos Dragons vs Elemental Dragons

I used to run Chaos Dragons and never really had a problem with them. They were pretty consistent and even with Red-Eyes Darkness Metal Dragon at 1 it worked well. I recently discovered an OCG archtype known as "Elemental Dragons" and they can spam the field with rank 7 XYZ's no problem. They can also search for Red-Eyes Darkness Metal Dragon so it is faster and more consistent. I honestly think that Elemental Dragons are good, but not as good since they don't have the needed support cards or a real engine. What are your opinions?

hmmmm good comparison i would have to say chaos dragons because of consistency and being able to spam boss monsters such as bls.also there are so many combos to use if you have even a half_way decent chaos dragoin deck therefore making it superior>