I'm sure this has been asked many times before, but my search-fu is weak. I'm just getting started, and I'm curious if there is any major reason to select kegs over bottles or bottles over kegs? Does the beer keep longer one way or the other, is one or the other significantly cheaper both initialy and say 10-15 batches down the road, convenience etc... My Wife is already liking the idea of kegs just because of the number of bottles involved.