The Laphroaig 30yo is the best I have had, but that is not what I get to choose from here. My vote then goes to the Laphroaig 10yo CS since both the 57.3% and the 55.7% "Red Stripe" (the "Green Stripe" bottles remain unopened) are better IMO than the Quarter Cask. Both, however, are great Laphroaigs. After them come the 15yo and then the 10yo, which are good but not great.
Of course, the OB Laphroaig I would really like to get my hands on is the 17yo 2004 Feis Isle bottling which I hear is absolutely stunning! One of these days I will have to drop the 500+ euros for it
since this is from my second favorite distillery and that bottle is one of the most highly rated of all Laphroaigs.