Other blends worth a try might be
African - Ethiopian Limu or Malawi Pamwamba or Ugandan Bugisu?
Indonesian - Sulawesi Toraja, maybe Columbian or MTC Boomerang.
I have had good success with Columbian/Limu blend, which I and others liked a lot,
however cant compare it directly with a proper Mocha/Java as Ive never had any.