Well, I can't say mine is the largest because we only have about 20 associates! But have have worked at the large (ReMAX), a very small, and now the "boutique" type I am with, now and I like my present company the best.
It is actaully all about the service and the relationship you have with your realtor more so than any company name.
We all have access to the exact same inventory via the Multiple Listing Service, it just depends on how motivated and customer service oriented the agent is in my opinion. I pride myself on having the highest level of professionaism and respect for my clients interest, and it has served me well. Feel free to visit my pofile her on Trulia.
If I can be of service to you please feel free to contact me, and it is best that you speak to several realtors to see who you feel the most comnfortable with. Having a great relationship is the best way to have a successful and pleasant experience searching for property because it can be a daunitng experience! But well worth it when you find the right property.
Best of luck, and I would love to hear form you,