Welcome to the forum
Here in NYC, most pizza ovens are Vulcan ovens. The high end pizzerias use coal. Billy Joel has a wood burning oven in his home
In my travels, I stumbled across this
montague oven which appears to be a Vulcan clone of sorts. It looks like it should put out an impressive pizza, although it won't hit the temperatures of a woodburning oven, it's not tall enough for some breads, and it isn't cheap.
How many pizzas are you looking to bake at once? How often are you planning on making pizza? Although you save some elbow grease of not having to cut wood, a good gas oven doesn't preheat all that quickly.
Do you have the space for a regular oven and a pizza oven? You might want to buy a large high end oven and fabricate a hearth for it which can be removed if needed. I've also heard of people with two regular ovens, one of top of the other. Maybe you could make one a dedicated pizza/bread oven and fabricate a hearth for that. The technology behind pizza/bread ovens is not that complicated. All you need to recreate them at home is lots of thermal mass (ie thick stone/brick) in your ceiling, walls and hearth.