Hi Painted Desert-
I have personally lived in 4 homes in DC Ranch, one of which was in the area you are asking about. 94th Street has become increasingly busier as more and more DC Ranch residents use it to cut through the community to Bell Road.
If you are interested in purchasing a home in the area, I agree with some of the other agents who have recommended visiting the property at different times of day (rush hour, weekend, when school gets out) to see what you think of the noise. Also, as some of the agents have mentioned there is some airport noise from Scottsdale airpark. As far as value goes, homes on the outskirts of the communities within DC Ranch that side or back to busier streets typically sell for less than interior lots.
If you are looking for an agent who has experience in selling homes in DC Ranch and can help explain local market conditions, feel free to give me a call at 480.217.9184