Dual agency discount?

[Wesley C.]

I'm going in the morning to look at an mls listed property.  I already own a rental on the same street and know the area very well. Houses are all built by same builder and issues with one are predictable with others.   All that to say, I'd be perfectly happy to do the deal without the services of a buyers agent if the sellers agent would agree to a reduced commission.  I think dual agency is legal in TN, although often frowned upon.  My question is if this is worth pursuing to bring the cost down a bit or should I just resign to using my own agent.  In addition to saving money, I'm finding that agents are getting less motivated to work with investors because they are busy selling expensive homes, and the ones who aren't usually are new and know much less than I do.  This results in a lot of foot dragging on negotiations and poor responsiveness from agents.  Thoughts, suggestions, or experiences in not using a buyers agent for the sake of a discount?