I'll second orangedog's recommendations: go with Fuente, but maybe give a more emphatic recommendation for the Añejos. The Añejo 50 is an outstanding robusto, and if you can get ahold of a #77 'Shark,' you're in for a real treat. The Opus X, however, is much more in the style of a Cuban, as the wrapper for an Añejo is aged in a Cognac barrel, and it turns very
dark in color, with lots of rich, sweet flavors. Nonetheless, I'd call it a 'must try.'
I'm also an avowed fan of Don Pepin Garcia, but if your tastes are predominantly toward Cubans, I'd give my highest recommendation to the Tatuaje (which are made by Don Pepin) 7th Natural (also comes in a killer 'Reserve,' which is simply the same binder/filler but with a Connecticut Broadleaf wrapper - but less 'Cuban' in style) or the Reservas named J21 (robusto) and SW (literally Sir Winston, obviously a Churchill). The regular My Father robusto and/or toro (named a No.3 'Cremas by MF) are also worth a try IMHO.
Also suited to your tastes, I believe, but pricier and more difficult to acquire would be the My Father LE 2011 and the AVO LE 2011. 'Both in the $17-20 USD, but absolutely incredible smokes.
If you're genuinely interested in getting some diversity in style, I think you should try a Padron or Oliva Serie V - very full-bodied, potent smokes that really showcase the 'terroir' of Nicaragua IMHO.
Good luck, and do let us know what you end up buying/smoking.