The only good thing about soft boiled eggs is the special egg holder that posh establishments use. 
Like Hannibal's in Berlin, the only place where I've actually used one.  All I remember about that breakfast was that egg holder, and I was dismayed at the degree of softness of the yolk, but I ate it anyways.  I also had coffee, smoked trout, weird German bacon, and currants.  I don't remember what else was on the plate, give me a break, it was a breakfast I had over three years ago.  So, yeah.  If you're in Berlin, go to Hannibal's for breakfast.