The power of a Tag Line

I truly believe that the right tag line for any business will put a lasting memory in a consumer's mind.  And when we hear, "It's the real thing"--everyone knows it's about coke...or, "Just do it"--that would be Nike.  So what tag line works for a real estate agent?  Should it be about their geographic area, area of specialty, personal qualities/strengths, something catchy using their name??  There are lots of options...but I wonder which one's are truly most effective?  Does the consumer need to feel it is about them or about the agent or both?  I personally believe it shoud be both--but doing that and keeping it short are a challenge!  Consider these:  "Energy and Excellence that work for You"...or..."Your dreams are my goals"...or..."Results you can count on"...or..."Relentless, Reliable, Results!"  I have personally change my tag line 3 or 4 times, and am still trying to figure out which one will work best for me--and with a name like Karol Plawsky, there isn't much that can be used to incorporate that!  I'd love to hear from other agents who have had success with a tag line or had a customer say "Wow--clever line!"