Pubs in Dublin that sell both Beamish and Murphy's on on draught?

I've recently come to the conclusion that both Beamish and Murphy's are nicer than Guinness. I am having difficulty deciding between Beamish and Murphy's as to which one I prefer.

I would like to try both in a blind taste test, side by side, so I can conclude what my favourite Irish stout is.

Are there any pubs in Dublin that sell both Murphy's and Beamish on draught?