Depending on how "strong" you want I would suggest Charles Fairmorns Lancers Slices or Black Bayou Mist. A couple others would be Star of the East or Old Ironsides. Of the four Lancers Slices is my favorite as it has a nice rich taste (at least to my taste buds).
Try McC's Frog Morton series, #14, or Bombay Extra. Greg Pease's Westminster, Abingdon, or Maltese Falcon. C&D Da Vinci. CAO's Bill Bailey Balkan. Esoterica's Penzance or Margate. Just for starters!!!!!!! FTRPLT