Are all Realtors the same?

[Harold Smith]

My wife and I are self employed, hard workers and loyal to our customers.  Due to contractual obligations that we set up with our customers, we are literally home on average of 45 hours a week.  Time is a valuable commodity for us and we think it is imperative for us to find a realtor that will work with investors.  We have no problems investing out of our area.

What we want to know is where do we start to find these realtors?  Would we start at local independent brokers or go with one of the bigger national chain brokers?  Is there a difference between them when it comes to dealing with investors?