Where to market flyers?

[N.TX]

I wanted to know what areas had the highest success rate for marketing flyers too such as your older neighborhoods or newer neighbor hoods high class or middle class. Bye the way i passed out 200 flyers in this neigbor hood on one side of the street in that area i passed out 100 that were just plain stating services offered on grey paper with black letters and the name in blue. On the otherside i did 100 with the price on them for 5 buck cheaper then i normally would charge. I had one call from the first neighbor hood and from the other i had 3 calls and landed 3 accounts over the phone within a week. I knew the general size of the yards so putting the price on there wasnt really a problem because i need the accounts to get started.So anyways what are the best neighbor hoods to market this type of advertisement to?