Hello Shapur and thanks for your question.
As always, agent Keith Sorem is my pick for "sharp pencil" this time. He is correct that you can work with as many buyers agents as you wish, but be prepared to disclose to all that you are working with other agents. For some agents, using multiple Realtors will mean that you become a "less desirable" client because your allegiances may truly be with another agent, so the effort expended by one agent may result in your taking the property to the agent you prefer. It can become a very sticky situation and very well may result in none of your agents providing you with the care or attention that might have garnered from the one agent you have selected to work with full time.
My suggestion is to contact several agents, interview them, and select the person with whom you trust, and feel knows your particular market the best.
Grace Morioka, SRES, e-Pro
Area Pro Realty
Thumbs up to you, Keith--you make us all proud to be your colleagues!