"You're a realtor who's card I always want to keep.  Some things about our industry are quite wonderful...for instance the kind of people one gets to meet."

(And Safdar is a "competitor" in that he is a professional Realtor with another brokerage!  But he is truly a great colleague and he was responsible for making the purchase of his listing an absolute pleasure! His card is "etched" in my contact list as well!)