If you find you like the C&D offerings, you might try Night Train when you get a chance. That is one of their stronger blends, and it also is quite complex in comparison to, say, 5 Brothers or Tambolaka. G&H Black and Brown Irish X are also heavy hitters but very different from more "mainstream" tobaccos. The baked, oil-soaked Black Irish X is one of the more unique flavors out there. Definitely not a beginner's blend IMO. G&H Dark Flake/Plug is very similar to Peterson's Irish Flake and can really pack a whallop to the uninitiated.
Burley has a naturally high nicotine content. If you go to tobaccoreviews.com you can search virtually everything currently available and target the Burley rich blends. VaPer blends can also pack a punch if the Perique content is heavy. Perique is a Burley tobacco which has been pressed and fermented. It's nicotine content will be similar to straight Burley.
If you find you like Latakia, the C&D Bowlegged Bear is another nicotine-a-plenty option.
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