I can't PM, but I'd love to help you. I've helped several on this board and work from Downtown out to the west side. Please feel free to email me at my username at gmail.com or call/text at
The part of town you're looking for will play a big part on who you should use. A buyers agent's specific market knowledge is a huge part of their value.
Diggity was my realtor and really helped me out. He's right, local market knowledge is critical. Based on his posts from the Houston board I know he does his research and knows his area well. He steered me away from a couple of houses for reasons I wouldn't have thought of. Give him a call, especially if you're looking in Garden Oaks, Oak Forest, Heights, or Westbury.