The glorious Aberlour A bunadh, although not exclusively a first sherry cask, is certainly a really powerfully sherried whisky. Try something new. You ll be surprised. A useful carrier is the recent edition of distillery Glenlivet 12 y.o., and some of the Lowland distillery bottlings, particulary St. Magdalene and Rosebank . These are by the way, also grand carriers for a strong Highland Park.
Peat monsters are obvious choices for vatting.
You can make some very pleasant drams by adding a little Laphroaig to a Bruichladdich or Bunnahabhain. I can t wax lyrical about every well-sherried peaty whisky. The clash does not suit me. So I ve been adding in 2 or 3 drops of Signatory Lagavulin 6 y.o. to a Scapa 12 y.o. Interesting, but not what I want.