So whats the advantage of the 70 is they both can do only 1 pir and the 70 doesnt come with a stand?
You have greater flexibility in bake time in having the pie farther from the flames. You can also fit more loaves of bread, and other pans of food. And finally, the dome height ratio is lower, getting you closer to a true neapolitan oven. Truth be told, though, you might be able to fit two 10 in pies in there very snugly.