I'm thinking about picking up a bottle of Brora 30-year-old single malt but I'm undecided between several of their "editions" or "releases", namely the 2004 ("3rd" edition/release?), 2007 or 2009. Due to the high prices of these 30-year-olds I'm limited to buying ONE bottle (yes, wouldn't we all like to have each year's release!!), so I want to be sure I'm making the best overall choice. Is there an appreciable difference between years, aside from the ABV, type of cask, etc. - or are they all good, and worth the $$$? (Maybe a subjective question.) Any experts care to weigh in?