true 70% deals are getting harder to find in my area of Dallas, and I am picky about the areas, I use the same agent, and she has never brought me a deal I had an interest in,,I find a property, drive by, if it looks like a potential deal I call her to get the code,,she pulls comps for me, she knows I am going to buy houses (if not that one then another) so the comps are always fair, and she knows I will put in many offers to buy one deal.
She is a very experienced agent and doesn't deal with any other investors, I have known she and her husband for nearly 20 years, and she sold me my current home.
When she has someone in a distressed situation she always calls me first, but many times its for me to tell her if the price they want to ask is one that investors will have any interest in, of course I have first shot at the deal if it is one (very, very rarely is).
I actually write my own contracts and e-mail them over to her, that way no lag time, because as someone else stated, good deals do not last for long.
My agent is for making my offers, etc, she doesn't 'sell' me anything, most of the houses I buy she never sees.